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Author Topic: Oil In Air Cleaner?  (Read 5409 times)

Offline forrest86c20

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Oil In Air Cleaner?
« on: April 08, 2008, 04:43:04 pm »
Hi I own a 1986 Chevy C20HD with the Vin M 350 and I took off the air cleaner to change my air filter, and there was like 4 OZ worth of oil in there!

Is this normal?
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Offline HAULIN IT

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Re: Oil In Air Cleaner?
« Reply #1 on: April 08, 2008, 05:30:28 pm »
Forrest, Hate to be a wise guy, but yes it's normal............for a wore out engine with a bunch of blow-by. The oil is getting up in the valve covers under pressure, past the valve guides, then up through the breather hose. Sorry,  :'( Lorne 
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Offline forrest86c20

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Re: Oil In Air Cleaner?
« Reply #2 on: April 08, 2008, 06:12:14 pm »
But this isnt a "wore Out Engine" this motor only has 15K miles on it
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Offline Fordeatinz71

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Re: Oil In Air Cleaner?
« Reply #3 on: April 08, 2008, 06:16:48 pm »
well, you could have a plugged PCV valve.  if that's clear then you might wanna check into the warranty i really hope you have...
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1991 Chevy Silverado K1500 ECSB, 350, 700R4 w/shift kit, 3.42's, exhaust work...
1983 GMC Sierra K1500 SWB-sold :(

Offline forrest86c20

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Re: Oil In Air Cleaner?
« Reply #4 on: April 08, 2008, 06:27:08 pm »
Ok thanks I'll check that, no the warranty is gone, but it runs just fine, and it doesn't burn oil, it just bugs me lol

EDIT:

Ok The Oil is coming in from the Breather, PCV Valve looks like it could use replacement so I'll get a new one.
Could too much oil in motor cause this?
« Last Edit: April 08, 2008, 06:37:59 pm by forrest86c20 »
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Offline 1976Scottsdale

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Re: Oil In Air Cleaner?
« Reply #5 on: April 08, 2008, 08:03:39 pm »
I would do a compression test and a cylinder leakdown test.  When my 327 did the same thing, two pistons had broken rings on them.
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Offline VileZambonie

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Re: Oil In Air Cleaner?
« Reply #6 on: April 08, 2008, 09:49:42 pm »
Yes, make sure the oil level is correct. Replace the PCV valve and the breather element.
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Offline forrest86c20

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Re: Oil In Air Cleaner?
« Reply #7 on: April 12, 2008, 03:24:06 pm »
Update

Replaced PCV, Breather, Plugs, Wires

I found I had a little too much oil in, doh LOL

But it's running ALOT better and no new oil in the air cleaner :D
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