Mechanics

OIL ON SPARK PLUG #6

1984 Mercedes Benz 500sel

Engine Mechanical problem
1984 Mercedes Benz 500sel V8 Two Wheel Drive Automatic

What kind of test has to be performed to find out whether your oil seals are worn or your piston rings are worn without opening up the engine and doing it on a trial and error basis
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Jeff Sarkari
January 31, 2009.



Hi there,

A quick test to prove the rings is a wet & dry comp test, do a normal hot engine comp test and not the readings, then add a small amount of oil to the cylinder and re test, the oil will seal up the rings and if the comps are some what higher you will have faulty rings, start here.

Mark (mhpautos)

Mhpautos
Feb 1, 2009.