You did a compression test and have 195lbs what is the compression of the pistions?

Cars & Vehicles

There is no possible way to answer that question based on just PSI.

Try googling compression ratio calculator. Once opening the first result you will need to enter your engine specifications to find out the answer. You will need to know the bore, stroke, gasket thickness, size of the combustion chamber and specs of the piston head to get an accurate answer.

If you have a unmodified engine then it may be easier to search google and wikipedia for your specific engine to find the results.

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Related question

What is the difference between a compression test and a leak down test?

A compression test uses the engine turning to generate the compression in the cylinder for the compression stroke, in which both intake and exhaust valves are closed.A leak down test uses a set of gauges and pressurizes the cylinder with air and measures how much of that air is escaping.

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Can you have five pistions?

Yes a H3 Hummer has a inline 5 cylinder engine which has 5 pistons.

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What does a compression test tell you?

A compression test can tell you many things such as if you're getting blow by. which means one of two things either all the compression ring gaps on the piston line up in sync or possibly you have a crack in your cylinder. Also if you have the distributor shaft apart from the engine a compression...

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What is a good compression test reading?

As a general rule a compression of 135 PSI or better is excellent.Similarly, A compression of 85 PSI or lower is extremely bad.The most desirable situation is that all cylinders give the same or close to the same reading.Furthermore, That reading should be above 135 PSI.

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Is a leak down test better than a compression test?

One test result where a compression tester can be as good as a leak-down test: If two cylinders side-by-side have lower compression than the rest, the most likely cause is a blown head gasket between the cylinders.You can perform a leak-down test with the piston at bottom dead center.

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What does a car compression test tell you?

How well the combustion chambers hold pressure. It's a good indication of overall engine wear and condition.

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What does a compression test determine?

A compression test reveals the condition of your engine's valves, its valve seats, and piston rings and whether these parts are wearing evenly.Healthy engines should have compression over 100 psi per cylinder, with no more than 10 percent variation between the highest and lowest readings.

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How much does a compression and Leakdown test cost?

The average cost for an engine compression test is between $181 and $220.Labor costs are estimated between $128 and $162 while parts are priced between $53 and $58.

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What will a compression test tell me?

What will a compression test tell me? Low compression in one cylinder usually indicates a bad exhaust valve.Low compression in two adjacent cylinders typically means you have a bad head gasket.Low compression in all cylinders would tell you the rings and cylinders are worn and the engine needs t...

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How do you disengage fuel and spark for a compression test on a 1994 civic?

pretty much only way to stop the fuel, is if you have an electric fuel pump, you can remove fuel pump fuse.but you really dont need to do this for a compression test. in performing a compression test, you need to remove spark plugs to use compression gage. before you start, remove the lead that g...

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How much should a compression test cost?

Compression Test Service Costs When having a compression test done by a repair shop the costs will vary depending on how many cylinders your car's engine has and how difficult the sparkplugs are to remove.Most shops will charge about $80.00 for a 4 cylinder and about $140.00 (US) for V8 engine's.

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When should you do a compression test on an engine?

What you're looking for during the test is abnormally low numbers or numbers which don't line up.If one or more pistons are making 10% less compression than the others, then it's time to do a wet test.A little bit of oil is added to the offending cylinders, then the compression is checked again.

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What is the compression ratio of and engine?

Compression ratio is the difference in the volume of a engine cylinder between when the cylinder is at it's largest volume, compared against when the cylinder is at it's smallest volume. Gasoline engines use 8:1 to 12:1 compression ratio. Diesel fuel engines use 14:1 to 25:1.

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Will a compression test tell me if I have a blown head gasket?

If you suspect you have a blown head gasket, take your time diagnosing the problem.Dry and wet compression tests and cylinder leakdown tests might reveal the location of the leak.A block tester can help determine whether combustion gases are present in the cooling system — a sure sign of a head g...

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When performing a compression test the readings should be?

All cylinders should be within 10% of each other.

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When doing a compression test on a gas engine do you start the engine?

No, The compression test is done as the starter cranks the engine

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What is the typical compression ratio and combustion chamber pressure in a compression ignition engine?

Typical compression ratios between 18:1 and 23:1 are common, although in an effort to minimize oxides of N2 compressions as low as 16:1 are being employed generally resulting in a loss of 1-2 mpg resulting from the lower thermodynamic efficiency of the diesel cycle. Higher compression ratio yield...

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Can I do a compression test on a cold engine?

You can do it warm or cold - your choice.Working over a cold engine is safer and more comfortable than working over a warm engine.If the engine appears to have a serious problem and all you are looking for is a gross problem like a blown head gasket or burnt valve, do the test cold.

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Will a compression test show a bad valve?

Wet Compression Test Diagnosis If the compression increases, the piston rings are at fault.Burned valves: If the results remain the same, one of the valves are bad or not seating correctly.Low compression in only one cylinder typically indicates a bad valve.Exhaust valves burn due to hot gases p...

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What is the compression psi of a compression ratio of 16.2?

There is no direct connection between compression ratio and pressure. Ratio is a mathematical calculation of the cylinder volume from bottom center to top center. Actual cylinder pressure will depend on the volumetric efficiency of the engine. Factors the affect volumetric efficiency include rpm,...

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What happens when you have low compression?

Low compression in one cylinder usually indicates a bad exhaust valve.Low compression in two adjacent cylinders typically means you have a bad head gasket.Low compression in all cylinders would tell you the rings and cylinders are worn and the engine needs to be overhauled.

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What is the purpose of compression rings?

To prevent fuel, air and combustion gases from escaping.Short and simple.

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What is the compression ratio of a diesel engine?

The compression ratio of a Diesel ranges from 14:1 to as high as 25:1.I agree just depends on engine.

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What is the average compression ratio of a diesel engine?

Diesel engines are designed to operate at higher compression ratios, usually between 15 to 20, while petrol engines have lower compression ratios usually between 8 to 10.Since the higher the compression ratio of an engine the higher the thermal efficiency, so diesel engines generally have a bette...

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What is the deffintion of compression ratio?

Compression is squeezing something so that it occupies a smaller space. Ratio is the proportion between two quantities or numerical values. Click the link for a detailed explanation. Explanation below!++++Therefore a Compression Ratio is the ratio between original and compressed volumes of, norma...

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How can you tell if you have a compression leak?

Do a compression test Make sure battery is fully charged Remove all spark plugs Lock throttle fully open Check each cylinder Highest should be within 10% of lowest

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What is the compression pressure of a 400 sbc?

It could vary greatly depending on how the engine was built. What you want to see is all the cylinder readings be within 10% of each other.

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Do you use compressed air or oil to do leak down test on a car engine?

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You have white smoke coming out of your exhaust But you have perfect compression And only smoke's after idle and it puffs once and stops while driving And the car runs strong.?

It can be nothing more than condensation when you first start the engine. But it may be more serious. White smoke from the exhaust can be a sign that coolant is entering the combustion chamber. Normally this would indicate a blown head gasket, but on some vehicles where the coolant flows through ...

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Compression ratio of the internal combustion engine is defined as?

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What is considered a high compression engine?

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Is the 460 a high compression engine?

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What is a good engine compression ratio?

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You have a 2000 Nissan Altima that is leaking anti-freeze the radiator was pressue tested and was replaced it is still leaking sitting in the car it is front slightly right What do you think it is?

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What happens when you lose compression in a cylinder?

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What is the compression ratio for gasoline?

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What is the effect of compression ratio on efficiency of Otto cycle?

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