1989 Chev. 350/5.7 Tbi The #3 cylinder keeps fowling out my spark plug. It misses really bad. It only has 100,000 original miles on it.

Asked by Sunday13 Dec 28, 2016 at 06:13 AM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

the #3 Cylinder keeps fowling out the spark plug, bad. It is very chard and
does have some oil on the spark plug.  About every two weeks I  have to
replace it.  I have checked rest of the spark plugs and they are fine.  I have
notice blue smoke, just a little when i start it for the first time each day.  I am
losing oil somewhere. About a quart every two weeks.

1 Answer
157,395

Bob answered 7 years ago

Running a dry and wet compression test may help you figure out if it is a valve guide, seal, piston ring or cylinder wall issue. If it is a valve guide seal it is a fairly easy repair.

Mark helpful

Your Answer:

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