- General Information

Notice: Some engine noise is characteristic to the design. Compare the sounds in other engines in order to make sure that you are not trying to correct a normal condition.

^ There are four steps to diagnosing engine noise. They include:
- The type of noise
- Under which operating conditions it exists
- At what rate in the engine
- At what location in the engine
^ Compare the sounds in other engines to ensure the noise is not a normal condition.
^ Remember, engine noise is generally synchronized to either engine speed (caused by the crankshaft, connecting rods or pistons) or one-half engine speed (valve train noise). Try to determine the rate at which the noise is occurring.