What does it mean when oil is going in to the intake I. Have a 89 chevy cav z24
Jan 17, 2013 at 10:39 AM
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JACOBANDNICKOLAS
✓Experienced Mechanic
110,246 POSTS
Chances are you have excessive blow by coming from the engine and getting oil into the intake system. Blow-by is caused by excessive wear to the rings which allows compressed air to get into the crankcase. You didn't list the miles, but I will assume it is high based on this problem.