Why does my bike backfire when I start it?

When the engine on your motorcycle has an emission system malfunction, such as an exhaust leak or a moment of running rich or running lean, backfire can occur.

This difference causes backfire in the exhaust.

Other causes of backfire are bad or weak fuel pumps, low fuel pressure, or clogged fuel filters.

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Why does my lawn mower backfire when I start it?

Water-contaminated fuel could be another cause of mower backfire and power loss.A lean carburetor could also be the cause of backfire when it has too little fuel in the gas and air mixture.A backfire could also occur if the carburetor has too much air in the mixture.

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Why does my pit bike backfire?

When the engine on your dirt bike has an emission system malfunction, this is due to the engine running rich or lean, which in turn causes backfire.If there is too much fuel than air in the engine, this is known as running rich.If there is too much air than fuel in the engine, this is known as ru...

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Why does a car backfire when you first start it?

Could be in need of a tune-up.

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Why does my car backfire when I shift?

Pops, crackles, and bangs in the exhaust shouldn't be called backfires.Backfiring is caused by overly lean mixtures in carbureted vehicles, or woefully bad adjusted ignition timing.Some racecars are equiped with an anti-lag system, where raw fuel is combusted in the exhaust to keep the turbo spin...

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Why does my car die when I start it?

An issue with the mass airflow sensor may manifest itself when a car starts and then stalls soon after starting.When an ignition coil begins to fail, it may struggle to provide consistent spark to the plugs, causing the engine to stall after starting.

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Why does my car rattle when I start it up?

If the rattling noise occurs when the car is stationary the origin is in the engine/transmission and/or exhaust system.If the identical rattle occurs when the car is moving, too, motor mounts or loose exhaust system components are a possibility.

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Why does my truck tick when I start it?

Sometimes an engine will tick when it's first starting due to a lack of lubrication on top of the motor.The ticking sound is commonly caused by opening and closing valves or rocking arms.This could mean the car is low on oil or there is a problem with the oil delivery system that needs to be repa...

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Why does my car smoke when I first start it?

The white smoke is the result of normal condensation which builds up inside the exhaust system.Thick smoke usually comes from the faulty in engine coolant, which could lead to many serious problems like damaged cylinder head, blown head gasket, cracked engine block… which might cost drivers quite...

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Why does my engine knock when I start it?

If the gasoline ignites on its own before the spark plug fires, because of engine pressure or engine heat, it explodes, making a knocking or pinging sound.Mori suggests your Pilot's knocking could be caused by "spark plugs that need to be replaced, ignition timing issues or any number of other po...

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Why does my truck knock when I first started it?

If the gasoline ignites on its own before the spark plug fires, because of engine pressure or engine heat, it explodes, making a knocking or pinging sound.Mori suggests your Pilot's knocking could be caused by "spark plugs that need to be replaced, ignition timing issues or any number of other po...

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Why does my car smoke when I start it up?

Give your car immediate attention to avoid costlier repairs.White smoke usually points to an engine burning coolant.When they are worn out, liquids begin to mix and consequently you start having engine problems.White smoke is usually caused by blown head gaskets or worn valve stem-seals.

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Why does my car squeal when I start it up?

The sound of a squeaking belt in a car's engine can be caused by weather conditions, leaking fluids, maintenance issues or wear and tear.The magnitude of sound can range from a soft squeak to a loud and noisy squeal and it may occur while starting a cold engine or during normal vehicle operation.

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Why does my car sound weird when I start it?

Most car noises come from the engine, belts and pulleys, hoses, exhaust system, tires, suspension system, tire to pavement contact, braking and aerodynamic interference.A car noise may be an early signal of an auto system or component failure.

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Why does my car make noise when I start it?

Start the car while it is cold and turn the AC off and on.If the sound of the screech changes, then the fault is likely in the belt that drives the air conditioner.Operate the headlight switch.If that causes a change in the squealing sound, then the culprit is the belt that drives the alternator.

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Why is my car backfiring when I accelerate?

An intake back-fire explosion can be caused by the fuel air mixture being to lean when the engine is demanding power.Some cars have a fuel filter which can also cause a fuel pressure and volume restriction.When they plug due to particles in the gasoline they can case a lean condition.

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Why does my belt squeal when I start my car?

The sound of a squeaking belt in a car's engine can be caused by weather conditions, leaking fluids, maintenance issues or wear and tear.The magnitude of sound can range from a soft squeak to a loud and noisy squeal and it may occur while starting a cold engine or during normal vehicle operation.

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Why does my engine shake when I start my car?

Worn out spark plugs are one of the most common causes of engine shaking.If your spark plugs are dirty or worn out they will be unable to fire properly and create the spark your engine needs to ignite the fuel.This causes your engine to misfire.Replacing your spark plugs is typically inexpensive.

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Why does my exhaust smoke when I start my car?

This is probably the result of normal condensation buildup inside the exhaust system.This kind of smoke disappears quickly.However, thicker smoke is a big problem, and can be caused the engine burning coolant.A coolant leak can also mix with oil and cause serious headaches for you and your car.

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Why is my car revving high when I start it?

Common causes of high RPM excursion at start-up are typically: large vacuum leak, throttle plate stuck open, cruise control stepper motor stuck in one position; faulty throttle position sensor, and/or faulty idle air control motor or solenoid.

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Why is my car shaking when I start it?

Well, if not, then this could be the right time to check it, in case your car shakes when starting.Even brake problems can lead to a shaking car.Brake rotors are compressed with the calipers and the brake pads, leading to the vibration in your car.Hence, a proper check of brake and rotors on time...

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Why will my car only start when I jump it?

If jump starting gets your engine started and running, but the car will not start again once you turn it off, the battery is probably the problem.In this case, the alternator is doing its job of keeping the battery going once it has been jumped, but the battery can't hold a charge when the altern...

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Why is my car sputtering when I start it?

Bad or Dirt Spark Plugs or Fuel Injectors The next thing that could cause your car to sputter when starting is bad or dirty spark plugs.This is because it takes a spark to ignite the fuel to get the engine going and if the spark plugs are dirty, then it may not be giving enough of a spark causin...

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Why is my car shaking when I start it up?

Well, if not, then this could be the right time to check it, in case your car shakes when starting.Even brake problems can lead to a shaking car.Brake rotors are compressed with the calipers and the brake pads, leading to the vibration in your car.Hence, a proper check of brake and rotors on time...

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Why does my car whine when I start?

It is very common for car owners to experience a whining noise when accelerating.Cars can make these whining noises from 1 of 2 places.The transmission or the power steering system.If the noise is from the front of the engine, then it's a power steering pump noise.

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Why does my car over rev when I start?

Common causes of high RPM excursion at start-up are typically: large vacuum leak, throttle plate stuck open, cruise control stepper motor stuck in one position; faulty throttle position sensor, and/or faulty idle air control motor or solenoid.

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Why does my diesel smoke when I start?

When white smoke occurs at cold start, and then disappears as the engine warms up, the most common causes are fouling deposits around piston rings and/or cylinder glazing.Faulty head gaskets and cracked cylinder heads or blocks are a common cause of water entry, and are often to blame.

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Why does my car make a popping noise when I start it?

Damaged CV joint: The most common cause of a clicking or popping sound from the wheels is a broken CV joint.When a CV joint becomes damaged, the axle loses its flexibility, and will make a constant clicking noise when the wheels are turned.Bad struts: Your struts are an important part of your sus...

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Why does my car keep cutting out when I start it?

An issue with the mass airflow sensor may manifest itself when a car starts and then stalls soon after starting.When an ignition coil begins to fail, it may struggle to provide consistent spark to the plugs, causing the engine to stall after starting.

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Why does my car idle high when I first start it?

Of course, all vehicles will idle high when cold.It is necessary for cold start up.Depending on the outside temperature, it should drop down to normal in a few minutes.Other conditions that can cause high idle are vacuum leaks that allow more air into the motor.

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Why does my truck make a grinding noise when I start it?

The starter will grind when it is improperly installed, or it is broken and the gears are not meshing correctly.If the gears are worn the starter will need to be replaced.The engine can make a grinding noise when it is starting because the oil is not circulating through the engine yet.

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Why does my car die after I jump start it?

If you jump start your car and it will start, but the engine dies right after the jump then it is most likely the alternator.(Note: Do not try to test the alternator by removing the negative battery cable with the engine running.This could damage your car or truck's electrical systems).

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Why does my 2001 BMW 740i screech when i start it up?

Loose accessory drive belt, faulty accessory belt tensioner (if applicable).

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Why does my car smoke when I start it in the morning?

Your car must produce smoke as a byproduct of the engine combustion process (burning of the fuel air mixture).Blue smoke is often caused by broken piston rings or damaged valve stem seals which allow engine oil to infiltrate the combustion chamber and get burnt with the fuel air mixture.

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Why does my car make a tapping noise when I start it?

It has developed a clicking engine noise on a cold start.After the car has warmed up, the sound goes away.Using a mechanic's stethoscope to locate the noise would pinpoint the source.Clicking or a sharp tapping from the valve cover on top of the engine would point to a valve train noise.

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Why does my car make a loud screeching noise when I start it?

Start the car while it is cold and turn the AC off and on.If the sound of the screech changes, then the fault is likely in the belt that drives the air conditioner.Operate the headlight switch.If that causes a change in the squealing sound, then the culprit is the belt that drives the alternator.

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Why does black smoke come out of my exhaust when I start it?

Black exhaust smoke means the engine is burning too much fuel.The first think you should check is your air-filter and other intake components like sensors, fuel injectors and the fuel-pressure regulator.Other reasons could be a clogged fuel return line.

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Why does my car smell like gas when I start it up?

A bad fuel pressure is one of the potential reasons that make a car smells like gas.Burning more fuel may cause gas fumes inside the exhaust.Gas fumes will also come inside the car if a leak makes the exhaust enter the ventilation system.In this case, smell is not the only symptoms of fuel pressu...

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Why does my car run rough when I first start it?

When your car starts in the morning when cold, the engine needs more fuel than it does when warm to start.This is controlled by an engine temperature sensor that sends a signal to the computer to provide a richer air/fuel mixture in order to start and idle properly in colder weather.

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Why does my car shake then turns off when I start it?

Shaking or vibration may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires.Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal idling RPM which may also cause the motor to shake or vibrate more than no...

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Why does my car shake when I start it in the morning?

When you start the car in the morning.because of high friction the engine cannot produce same power (as high coolant temp) and will cause instability.This is what you feel as vibration.Ideally it s called hunting i.e.your engine rpm will be going to higher and low rpm zones.

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Why does my car knocks when you first start it?

its called a "dry start" and Many cars do it .. when the car sits for a little bit like 30 mins or more .. all( or atleast the most) of the oil runs back down to the oil pan .. once u start it .. it has to regain oil pressure to stop rattling...........................

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Why does my car not start when it's hot?

It is very common for heat to cause the starter motor and bad connection problems.Electricity doesn't like heat.Heat creates high resistance in an electrical circuit.Most commonly this is a starter issue, but other parts of the primary circuit can have bad connections.

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My car backfired while i was driving and now it won't start?

The year, make, model and engine info would help.

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Why does my Chevy 350 backfire?

Backfiring is typically caused by an air/fuel mixture that is too lean, meaning the mixture has too much oxygen in it.First, check that the mixture screw(s) on the carburetor are adjusted properly.Most of the carburetors installed on the 350 use a single air/fuel mixture screw, while some carbure...

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Why does my Buick start good in summer but back fires in winter?

The year, engine size and any history of repair info would help.

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Why does my car honk when I lock it?

Why do cars honk when the doors are locked? Assuming that you're talking about when someone presses the lock button on a remote key, that happens when you press the button and the vehicle was already locked, its simply a way of notifying you that you were close enough and the car is successfully ...

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Why does my car smoke when I drive it?

White smoke generally indicates that you may have an internal engine problem, such as a head gasket leaking coolant into a cylinder.If white smoke is blowing out from the exhaust during first 3 minutes of a cold start up, it is likely you have a blown head gasket or a cracked/warped head.

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Why does my car stall when I give it gas?

The car will stall if the valve is too clogged or when it finally fails.If, while holding the accelerator pedal down, a small amount of pressure keeps the car running at a stop, the idle control valve may require attention.In most late model cars, this problem will usually trigger the Check Engin...

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Why does my car die when I give it gas?

The car will stall if the valve is too clogged or when it finally fails.If, while holding the accelerator pedal down, a small amount of pressure keeps the car running at a stop, the idle control valve may require attention.In most late model cars, this problem will usually trigger the Check Engin...

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Why does my subwoofer pop when I turn it off?

The other pop is caused by the actual switch turning off.There is energy stored in the woofer (inductor) or in the capacitors of the amplifier, which causes a back-EMF when the circuit is cut, much like when you turn off a fluorescent light; sometimes you see a spark at the switch.

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Why does my engine stall when I give it gas?

Some common reasons for motor vehicle stalls include: An empty gas tank.A fuel mixture that isn't rich enough (this is usually the cause of cold stalling and intermittent stalling) A faulty fuel pump, alternator or EGR valve.

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Why does my car smell when I floor it?

Smell Five: Rotten Eggs If you only smell it with the fresh air intake on, which is likely going to be the case, then it's being drawn into the car.The most common cause of this type of smell is hydrogen sulfide from the catalytic converter, which can be caused by a bad catalytic converter or fu...

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Why does my car sputter when I turn it off?

Usually it's a sign of one or more of the following: (1) excessive gasoline remains inside the combustion chamber even after shutoff, causing "auto-ignition" (similar to dieseling due to compression ignition) even after you turn off your engine.(3) air filter is a bit clogged, causing the carb to...

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Why does my car lock itself when I unlock it?

All the central locking systems, no matter how simple or complex, can suffer this problem when they lose the signal.Faulty door sensors can also cause this problem, and until they are replaced, the system will continue to act up.This, too can make the doors to lock and unlock while you are driving.

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Why does my AC click when I turn it on?

Causes of AC Clicking Clicking noises as your unit turns on or off can be caused by a loose fan, or a faulty relay switch.Frequently, when a fan becomes loose, from average wear and tear, or lack of maintenance, it will hit against something in the condenser.

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Why does my car sputter when I give it gas?

Bad or Dirty Spark Plugs: Spark plugs are responsible for igniting the fuel in the combustion chamber.If they are not working correctly or are dirty they don't ignite the fuel cleanly and the car can misfire or sputter.Vacuum Leak: A leak in the vacuum system can lead to a sputtering or rough run...

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Why when I start my car I smell the fumes?

If the smell of exhaust in the car is an ongoing problem, there is most likely a leak in the exhaust system.A rotten egg smell coming from the exhaust port can indicate an issue with the catalytic converter.Regardless of the cause, exhaust can be deadly and the vehicle should be inspected immedia...

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Why does my fan come on when I start my car?

Electric fans can come on after you shut off the engine.It varies, but since most fans are electrical, they will come on any time the coolant temp sensor indicates the need for more airflow to the radiator, or anytime the air conditioner is driving the need for more flow across the condenser.

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Why does my car cut out when i step on the gas when trying to start.?

you need to disconnect the two wire spout connector shorting bar located between the battery and data link connector

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Why does my car stutter when starting?

Hi there - if your car stutter-starts, but runs fine once it is running, you probably have a problem with the fuel system check valve.A malfunctioning check valve requires the fuel pump to run longer to build adequate pressure for the engine to run, resulting in longer cranking time, and stutteri...

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Why does my car hesitate when starting?

To give you some initial ideas, although there are many causes of hard starting illustrative causes include a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors)...

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Can I start my bike without a battery?

Yes, you can ride a bike without a battery without any problem as long as your vehicle has a kick-start as well to start.I think these will not run if there is no battery.If they are not wired through the battery, they will be very dim when the engine is idling but brighten when you start riding.

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Why does my car start but when you give it gas it will not move?

Take your foot off the gas and apply it to the break. Then shift from park to either reverse or drive. That usually works.

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Can I start my car when its plugged in?

Yes, you can use you're remote starter while the car is plugged in.You just want to make sure that you unplug the block heater before the car gets too warm, as you can overheat the block heater and cause it to burn out.

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Why did my car make a loud grinding noise when i tryed to start it?

Starter and/or starter drive gear failure. This could lead to damaging the ring gear which is costly to repair.

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My car has problems starting when I fill it gas?

It may be vapor locking or flooding. It main need some timing work.

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Why is my car whistling when I start?

The sound you are hearing is air leaking across a damaged gasket or a warped sealing surface.With the throttle closed, or in deceleration mode, the manifold pressure is very low and if there is a leak anywhere in the induction system that should normally be sealed, you will hear the (very common)...

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Why does my car make a loud tractor type noise when accelerating and when I start my car it is also slow to accelerate?

Sounds like your ignition timing is off.

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Why does my car backfire and lose power?

A backfiring or smoking exhaust can indicate either too much fuel or too little spark, both of which can bring about power loss.A backfire occurs when the fuel-air mixture does not fully ignite in the combustion chamber, but instead pops off elsewhere in the system.

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Why won't my car start when its hot?

The most common reason why a hot engine will not start is because the problem is related to fuel.When your new car engine is too hot, fuel cannot circulate well, due to the way vapor obstructs its workings and therefore the engine just will not start, as it should.Then go and get a high quality e...

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How can I make my car backfire?

To make an older car backfire, start the vehicle and bring it to a steady rev as you normally would, then turn the engine off with your foot on the gas pedal.After waiting a few seconds, restart your car with your foot still on the gas pedal.

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Why wont my car start when its rainy outside?

check and make sure water is not getting in ur alternater cap

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Why does my car not start unless I give it gas?

Unlike other hard starting problems related to car battery, this trouble indicates that either the mixture of air and fuel is not igniting or the engine is receiving an insufficient amount of air and fuel for combustion.And, because several car components may lead to this problem, let's diagnose ...

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Why does the steering wheel vibrate when I start my car?

the motor mount is bad

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Why doesn't the check engine light does not come on when I start my truck?

Evidently the bulb is blown out. It needs to be replaced.

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Why does my car alarm go off when I use remote start?

If your vehicle's alarm is set off during remote start or trunk release it would be due to the factory alarm system.Please attempt to disarm the factory alarm using the factory remote or by unlocking the vehicle doors with the key.

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Why does my car shut off after I remote start it?

The most common reason for a vehicle to start, then immediately shut off is engine checking.Compustar systems monitor voltage or tachometer signals from your vehicle to know exactly when the vehicle has started.Turn the vehicle OFF.Retry starting your car with your remote control.

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When i start my car when its cold outside I always smell gas?

Smelling a gasoline smell when the weather is cold could mean that the gas is set too rich. It would also be possible that the carburetor needs to be checked for a fuel leak.

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Why does my 2000 alero stop running after I start it?

Could be several reasons. Start with checking the basics like fuel and spark. If you're losing spark it could be a bum ignition module or a bad crank sensor. If you're not losing spark, check fuel related issues like a plugged/dirty fuel filter then if the fuel filter checks ok have a fuel pressu...

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Why does it stop backfireing out the exhaust when the air injection system is disconected?

because you cut off the lean mixture happening inside the combustion chamber.for EFI engine with knock sensor, the knock sensor will send signal to ECU to reduce ignition timing of the engine just few degrees..also, disconnecting the air injector, will reduce air coming and therefore making the m...

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Why does my car say wait 3 min before I start it?

If your car is a Diesel engine and when you turn the key on it ignites the glow plugs because diesel gas can congeal (become thick) in cold weather. So the glow plugs warm the diesel and turn it back to a more liquid state.

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Why does my car hesitate to start after I put gas in it?

Potential causes include worn ignition parts (coils and spark plugs), lean condition (too much air, vacuum leak), rich condition (too much fuel, fuel presser, leaking injector) or a worn engine (carbon buildup or low compression).Before I dove into the misfire causes, I decided to check the fourt...

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Why does my car sound like it's running when I turn it off?

Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off.Once outside the car, she could hear a fan running in the engine area and asked us if this is normal.It is.And many other sounds from under the hood of a car that has been shut off are al...

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My 80cc bike motor takes 30 min of trying to start it to start. how can i start it first try?

it shouldn't take 30 minutes, it sounds like there might be another problem with the bike

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Why does my car start when it's cold but not hot?

The cold starting issue could possibly be caused by a failing fuel pump or even a temperature sensor.Heat increases resistance in electrical circuits, and it is possible that once the fuel pump has been running for a while, high resistance causes it to slow or stop.

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Why is my truck sputtering and backfiring?

An intake back-fire explosion can be caused by the fuel air mixture being to lean when the engine is demanding power.Some cars have a fuel filter which can also cause a fuel pressure and volume restriction.When they plug due to particles in the gasoline they can case a lean condition.

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Why does your car backfire while driving it?

Backfire is an explosion produced by a running internal combustion engine that occurs in the intake or exhaust system rather than inside the combustion chamber,

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When starting from a stop why does my car choke?

If you have an older car that has a carburetor, the accelerator pump diaphragm may be defective

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Why is my 390 ford motor not starting and back firing?

Depends. Sounds Like It Is Out Of Time, Or Plug Wires Are Crossed. Was It Running And Would Not Start Back ? If So Most Likely Timing Chain Problem.

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1976 345 will not start. it back fires through the carb what should i check first?

Check distributor cap and rotor for moisture and/or carbon tracks. Then check the condition of spark plug wires including the coil wire. Then check the operation and function of the choke and accelerator pump in carburetor.

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Why does my car sound like it's struggling to start?

As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator pulley.You may also notice a whining sound as a result of the bearings inside the alternator begin to fail.

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What to do when dirt bike does not start?

make sure there is gas, check battery, check sparkplug

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Why does my lawnmower not start when hot?

Lawn mower won't start oil on spark plug? The most common reason for oil on a mower spark plug is too much oil in the engine, but there are other possible causes: Mower turned on its side.Head gasket failure.

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Why does my truck blow white smoke when first started?

If when cold - probably condensation accumulated in the exhaust system - normal condition. If when hot - could be a sign of head gasket leakage allowning coolant to enter combustion chamber

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Why does my car smoke when starting in morning?

if the smoke is black it may be that it is runing rich. on the other hand if it is bluish in color it may be a sign that the piston rings are starting to show wear.

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Why does my 1989 probe starts and sometime it doesnt?

you have a bad electrical connection. Start at you battery and work back through the rest of the car.

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Why do i have to push start my car to start it?

Bad starter-we can only speculate

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Why is my car sputtering and backfiring?

The most common cause for this problem is a weak fuel pump which cannot supply the volume of fuel needed for the injectors to produce a proper spray pattern or deliver the amount of fuel needed for engine acceleration.Some cars have a fuel filter which can also cause a fuel pressure and volume re...

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Why does my 1986 Camry sputter and backfires when first cranked It does this at cold startup and wants to shut off when giving it gas. Once it is warmed up and driven it seems to run ok.?

Your car is running to rich meaning it's getting to much gas.

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Why is my battery sparking when I hook it up?

The battery cables can spark if the cables are installed in the improper order.When attaching the battery cables, place the positive cable on first and then the ground cable.Also, the ground, or negative cable, should not be touching anything metal while the positive cable is hooked up.

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