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#1 |
Registered User
Join Date: Nov 2003
Location: Birmingham, Alabama
Posts: 13
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Dont laugh.....My c-10 is constantly saturating the air filter with oil, it is coming from the valve cover breather tube that is oem, the engine is a stock 305 with a q-jet 2-barrel. What should i do to eliminate this problem? My engine needs to be rebuilt, 170k orig mi that eats a quart a month. Any help with this is much appreciated.
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-79 Bonanza C10 305 t350- --Needs front clip...LOL-- Cant stop the heartbeat of a Chevrolet. |
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#2 |
You get what you pay for
![]() Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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The most likely cause is a worn out engine. The rings are gone letting oil get by.
But, sometimes, the PCV valve can be plugged. Try a new valve and see if it helps.
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Mike 1985 Chevy C-10 |
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#3 |
Registered User
Join Date: Nov 2003
Location: Birmingham, Alabama
Posts: 13
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Thanks for your reply, that is on my to-do list now
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-79 Bonanza C10 305 t350- --Needs front clip...LOL-- Cant stop the heartbeat of a Chevrolet. |
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#4 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,288
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clean out the hose too
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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#5 |
Project92 SWB stepside
Join Date: Feb 2003
Location: Louisville KY
Posts: 4,793
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I 2nd the ring problem!!
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92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448 |
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#6 |
Hoarding Rusty Objects
Join Date: Aug 2002
Location: Slatington, PA
Posts: 267
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Before you go to drastic conclusions, is the little foam filter still on the breather hose? If its not there, thats why its leaking. If it is there, replace it along with the PCV. It will cost under $5 for both together.
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1985 Chevrolet K20 Silverado 1994 GMC Yukon Follow me on Youtube! - http://www.youtube.com/user/FuelInjectionSucks |
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#7 |
Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,906
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my breather does the same thing, replaced PCV and it still does it... engine only has 45+ k miles.... hope the rings arent blown yet... that would suck!
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Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
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#8 |
Registered User
Join Date: Nov 2003
Location: Birmingham, Alabama
Posts: 13
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The filter on the on the air cleaner pcv filter, is saturated, and yes its still there, But i quess its not work rebuilding a 305 with 170k on it huh??? I want to go 350, but being poor restricts my options. LOL I plugged up the tube, and so far so good, thank god i dont drive it everyday.
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-79 Bonanza C10 305 t350- --Needs front clip...LOL-- Cant stop the heartbeat of a Chevrolet. |
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#9 | |
STILL PLAYS WITH TRUX
Join Date: Nov 2002
Location: Melbourne, Fla.
Posts: 2,764
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Re: Why is oil blowing in my air cleaner??
Quote:
The 305 aint worth rebuilding! Now i konw all the 305 guys are gonna defend this eng. and say how good it is but deep down they want a 350 and they know it. So dont attack me for chevrolets down fall and for telling a fellow truck dude the truth about this POS. |
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#10 |
Registered User
Join Date: Nov 2003
Location: Birmingham, Alabama
Posts: 13
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Well if i change to a 350 wouldnt i have to stay within the same year model 350?? I mean i have read that to make the engine swap easier i need a similiar year engine. Im not an engine guru by far, but i need to do a swap as cheap as possible, any ideas?
Thankyou for all the input
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-79 Bonanza C10 305 t350- --Needs front clip...LOL-- Cant stop the heartbeat of a Chevrolet. |
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#11 |
Registered User
Join Date: Sep 2003
Location: Shelbyville, Indiana
Posts: 614
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Any 350 sbc should be a direct replacement. All the accesories should bolt right up to it from your 305. Almost the same block. I would go for a engine made in 79 or later since you can get more dress up stuff for it and it is cheaper. The dipstick would be on the drivers side and not on the passenger like the 80 to 85 blocks.
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Chuck '85 Chevy Silverado 4X4 ![]() '91 Chevy 4X4 Suburban ![]() http://www.cardomain.com/memberpage/545941 |
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#12 | |
Registered User
Join Date: Oct 2003
Location: Chesapeake, VA
Posts: 726
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Re: Re: Why is oil blowing in my air cleaner??
Quote:
However, be aware that '86 is a one-off engine: new-style crank and bottom end, old-style valve covers and intake. '87+ is center-bolt valve covers, new-style 1-piece rear main oil seal, etc. The '85 and earlier motors also have a different flexplate and crankshaft bolt pattern than later motors. Now, to be legal, you have to have all the emissions equipment associated with that engine for the same model year or newer of your truck. This is a Federal requirement. However, it's enforced locally, so you may get away with avoiding this-- at least for now... As far as I know, the engine mounts and such are common and didn't really change over the years. BUT, back to your original question. I'd put a new PVC valve and breather element in it first. If it doesn't solve your problem, then I'd be worried about blow-by like the others have said. Good luck! ![]()
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