How do I know if my fuel line is clogged?

Clogged Fuel Line Symptoms
  1. Trouble Starting. The fuel line is part of the fuel system, so the first sign of a clogged or blocked fuel line is difficulty starting the car.
  2. Smoke in the Car. Smoke in the car is a dangerous sign of a clogged fuel line.
  3. Engine Switching Off.
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How do I know if my antifreeze is low?

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