A bunch of pressure in the crankcase and blew the seal?

JAHWARRIOR007

MEMBER
1981 CHEVROLET TRUCK
V8
4WD
MANUAL
90,000 MILES

I have this truck and saw that the PCV valves and hoses were messed up so I tried to fix but I think I ended up plugging or blocking the air ways (I think). I was driving the truck today and saw that the front oil pan seal had blown, I did drive the truck before with only a PCV valve on one side and the other had, what looks like a hose connected to a fuel filter and hanging to one side. So I am not sure if I didn't fix the PCV setup correct and just created a bunch of pressure in the crankcase and blew the seal. Thanks for your time.

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Replace the PCV valve and make sure you hook up to an intake manifold vacuum-meaning full vacuum 18-30in vac

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Thursday, December 13th, 2007 AT 11:35 PM

KEN L

MASTER CERTIFIED MECHANIC
48,505 POSTS

I agree with RASMATAZ, the PCV must be in good working order or you will have excessive pressure inside the crankcase and it will blow seals out. You need to make sure the PCV is on the right directions as well here is more information. Check out the images (below). Please let us know what happens.

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