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How to fix oil blowback - Wrangler Jeep Cars & Trucks

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Your rings are getting bad.

Posted on Apr 13, 2015


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Ok 88 4.0 blow back. Cleaned up motor changed oil pan and valve cover gaskets. Changed front and back vacume harness and CCV still blowing back. What could cause this? Oil psi runs 40 at start up...

Blowby is compression leaking past the rings. The PCV can only handle so much and then you get blowby. Probably just a worn out engine.

Aug 19, 2013 | Cars & Trucks

1 Answer

My 97 accord lx has a slight oil leak but the oil level us still fine. What could it be?

are you sure it is oil...could possibly be power steering or trans leak...or could be a slight leak at the rear main seal...have it checked for any blowback...or maybe its just over full which can cause a seal to blow out...let me know if any of this has helped

Jul 11, 2013 | Cars & Trucks

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Oil shoot out through air filter

That means your engine already have big blowback, air from engine crankshaft goes out into the engine oil cover and into the pcv valve to the air cleaner.
It is cause by the compression leakage from piston rings.
Better check and clean the PCV first or buy a new one if it is fully blocked. Located from the engine oil cover, follow the hose on top, hose goes into PCV and into air cleaner.

Hope that helps you out!

Sep 13, 2011 | 1998 Mazda Protege

2 Answers

When you drive it you can smell oil when it gets hot

Either oil is dripping on ur exhaust pipe and u smell it burning! Or Ur blowback oil/gas is the one ur smelling at, usually on top of ur engine valve cover there is a breather outlet connected with hose and goes thru the air claner housing! The hose might have cracks or been disconnected, check on that! Hope that might help you!

Nov 10, 2010 | 1998 Ford Escort

1 Answer

Engine oil coming out dipstick and engine has no power

sounds like you have a broken piston ring(no compession and blowback up the dipstick)the only answer is an engine rebuild.(bottom end.)

Aug 06, 2010 | 2003 Mazda MPV

1 Answer

Oil in the intake manifold air hose...

This is usually an indication of "blowback" caused by worn piston rings. How many miles on the engine? There is not a cheap solution if it is blowback.

Apr 28, 2009 | 2003 Volkswagen Passat

1 Answer

Serious oil blowback through air filter jaguar 3.2v8 1998 model

Replace the pcv valve. It will be on a vacuum hose the size of your finger. It's usually in the valve cover, just pushes in.

Apr 18, 2009 | 1998 Jaguar XJ8L

1 Answer

1993 4g37 blowing oil back through intake. Replaced PVC. Only will crank by opening the air filter container and still lots of blow by.

this is actually very common in fact if you own an eclipse that doesnt have atleast some blowback i would be amazed unlees it causes issues with the functionality of the enigne running i would recomend just keep an eye on ur oil and dont fix it unless it is an absolute must because on these cars you can never fix just one issue and you wouldnt want to cause more problems by trying to fix one that isnt really a big deal

Mar 06, 2009 | 1993 Mitsubishi Eclipse

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