302 pcv problems - H - E - L- P
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Junior User
Joined: Jan 2003
Posts: 95
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302 pcv problems - H - E - L- P
Can anyone tell me perhaps the best way to rig the pcv hose setup???
I am running a '94 fuel injected engine with tall carburated valve covers. The intake manifold has the pcv valve in the back of it, so I blocked off the hole in each valve cover with the rubber plugs that came with them. The vaccuum for the pcv is so strong off the intake it'll suck your finger at idle.
Is that too strong?????
I drove it and oil was bypassing through the rubber plugs in the valve covers.Also, the end of the pcv in the back of the intake was damp with oil. The end of the hose clamped to the intake was not damp however.
This is a 10.5 compression engine if that makes a difference.
"D"
I am running a '94 fuel injected engine with tall carburated valve covers. The intake manifold has the pcv valve in the back of it, so I blocked off the hole in each valve cover with the rubber plugs that came with them. The vaccuum for the pcv is so strong off the intake it'll suck your finger at idle.
Is that too strong?????
I drove it and oil was bypassing through the rubber plugs in the valve covers.Also, the end of the pcv in the back of the intake was damp with oil. The end of the hose clamped to the intake was not damp however.
This is a 10.5 compression engine if that makes a difference.
"D"
Posting Guru
Joined: Jul 2003
Posts: 2,232
Likes: 1
From: Colville, Washington
The pcv system is positive crankcase ventilation...so you must put the pcv valve in the valve cover to allow the crankcase pressure to escape. It sounds like you don't have the pcv valve installed? At idle there should be alot of vacuum at the intake. Is the pcv port in the intake into the lifter valley or into an intake runner?
Elder User
Joined: Sep 2003
Posts: 908
Likes: 4
The PCV valve goes into one valve cover and is connected to that port you described. Yes, the suction is strong but the valve meters it.
The other valve cover needs a breather or a hose into the air filter assembly.
The other valve cover needs a breather or a hose into the air filter assembly.
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
Are you running a mustang type intake manifold? The PCV valve will be in the intake manifold, but I think it still connects to the valve cover (although I don't know for sure).
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Elder User
Joined: Mar 2003
Posts: 522
Likes: 0
From: Warren, MI
Ok there is 2 main parts to the "ventaltion" of the crankcase.
1: The breather, comming off og the oil fill cap, lets cold air in if needed, also relieves SOME pressure off the that cover.
2: The PCV valve comming from the passanger side valve cover going to the intake, this vents MOST of the pressure out of both valve covers. This part is a must of you'll have leaks all over from the pressure build up.
Adam
1: The breather, comming off og the oil fill cap, lets cold air in if needed, also relieves SOME pressure off the that cover.
2: The PCV valve comming from the passanger side valve cover going to the intake, this vents MOST of the pressure out of both valve covers. This part is a must of you'll have leaks all over from the pressure build up.
Adam
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