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Basic engine misfiring with oil consumption too high (A20NFT/LHU)

Basic engine misfiring with oil consumption too high (A20NFT/LHU)


Cause Procedure
Worn valves, valve guides and/or valve stem oil seals
1. Check for oil deposits on the spark plugs.

2. Repair or replace if necessary.


Worn piston rings Oil consumption may cause the engine to misfire.
1. Check for oil deposits on the spark plugs.

2. Check the cylinders for compression loss. See Compression test engine

3. Carry out a leakage test and compression test on the cylinders to determine the cause.

4. Repair or replace if necessary.