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Thread: Oil from breathers
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08-30-2009 #1
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Oil from breathers
i have oil coming out of my breathers on my valve covers. one side it lightly spraying on my firewall and the other side is dripping on my headers. what the heck? the motor is new, valve covers new and they have baffles.
Jesse
1969 Camaro under construction.
1967 firebird. 6.0/t56. Ridetech stage 2. Moser 9 inch. Forgeline wheels.(SOLD)
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08-30-2009 #2
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Are you running a PCV?
John Parsons
UnRivaled Rides -- Modern upgrades for your ride.
UnRivaled Rides recent project -- LS9-powered 69 Camaro
08-30-2009 #3
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A little 'dew' is not uncommon, but a spray or enough to run down the valve-cover is not. You may want to do a cylinder leakage check to look for ring blow by. If it's just a bit of dampness and not a drip/run, removing one breather and adding a pcv can be a good thing.
Also, just another though, if you have the breathers at the back of the engine I have seen oil accumulate and come out them. Also spray from the rockers can cause problems if the valve covers don't have baffles. -Dan1968 Camaro RS/SS, LS7 with Katech mods, T56 Magnum, C6Z06 Brakes
1968 Camaro RS Convertible LS3/480hp/4L70E
1962 Corvette 327-340hp stock
1963 Corvette Split Window Coupe
1967 Corvette L79 convertible
2006 Corvette Z06
2011 Corvette GS convertible
08-30-2009 #4
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i'm assuming you don't have a PCV since you say they're leaking on both sides? a PCV will help pull the crank gasses out. also, you might just have to wait for the piston rings to break in, depending on how new the engine is.
work in progress--for the next 10 years.
1987 monte carlo ss 383ci, 9.7:1, xe274 cam, vortec heads, 200r4, 3.73 posi.
08-30-2009 #5
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the motor has maybe 300 miles on it. and i dont have a pcv. i think i will do that tomorow.
1969 Camaro under construction.
1967 firebird. 6.0/t56. Ridetech stage 2. Moser 9 inch. Forgeline wheels.(SOLD)
08-30-2009 #6
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The PCV should fit things, if it doesn't there are some other (more expensive) tricks to help.
1971 Camaro, 383 stroker ~500HP,M21 Trans with lightened flywheel. All Sorts of Auto-x Goodness in the Suspension. 12" Brakes ->SOLD
But ask me about my 2004 STi Auto-x car...
Just call me Brett
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