Engine Noisy

Abnormal engine noise often consists of various noises originating in rotating parts, sliding parts and other moving parts of the engine. It is, therefore, advisable to locate the source of noise systematically.





Troubleshooting Procedure
Short out each spark plug in sequence using insulated spark plug wire removers. Locate cylinder with defective bearing by listening for abnormal noise that stops when spark plug is shorted out.





Troubleshooting Procedure
Abnormal noise stops when the spark plug on the cylinder with defective part is shorted out.





Troubleshooting Procedure
Short out each spark plug and listen for change in engine noise.

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Part 2 Of 2:

Troubleshooting Procedure
The slapping sound stops when spark plug on bad cylinder is shorted out.