pcv valve

[nbutcher87]

ok so what i thought was a rear main seal leak i think turned out to be a pcv valve that had come off and was resting out of its mount on the back of the engine bay. just to make sure my assumption is correct if this were to come out could it cause oil to leak out on to the motor and drive train?

 

[toomanytoys]

Yes

 

[nbutcher87]

ok awesome just saved myself an ass load of money. just checkin cause i plugged it back in to place then took it for a spin noticed i was still smelling burning oil just figured that was some sitting on the motor or exhaust.

 

[toomanytoys]

Depending on how long it was out, there could be a good amount back there. Although it really shouldnt be dripping on your exhaust. Valve covers tight?

 

[nbutcher87]

it's all over the back half of the motor so im not sure if its burning off of the motor or the header/h pipe. i've got to replace the valve covers cause the plenum started to pierce the driver side do to the cover being to tall. just so many oil leaks hard to keep track of them all.

 

[toomanytoys]

Thats funny you said that. My gt40 plenum's vacuum tree pierced my drivers side valve cover about 15 years ago.

Anyway, just get a gasket kit from Summit or Jegs or wherever you like and do it once and be done with it.

 

[nbutcher87]

yeah already got a set of new valves and gaskets from latemodelresto.

 

[toomanytoys]

You should probably go with a small intake spacer so the same thing doesnt happen again

 

[nbutcher87]

these covers are more the height of the stock ones already mocked them up under the hood and should clear the plenum vacuum tree

 

[toomanytoys]

Sounds good

 

[87STANG]

The same thing happend to me a couple of months ago.... I replaced the pcv valve,rubber grommet, cleaned intake , replaced valve cover gaskets and it was ok for about 2months.... Just today i found the pcv valve and grommet out of popped out of place and leaking oil down the bell housing of the trans and back of the cyl. Heads. I reinstalled the pcv and grommet but not before wrapping rubber bandover the grommet to make a tighter fit in intake. Now the grommet and pcv do not pop out. However, after driving 2 miles found smoke coming from engine compt. And under car. I opened the hood to find oil blowing past my valve cover gaskets again. Wtf? I'm going to replaced the gaskets again tomorrow this time using felpro rubber gaskets instead of cork and hopefully it will be ok. But i fear that i may have bad piston rings and getting engine blow by.

 

[dsblk93gt]

Are the valve covers solid? Reason I ask is the only time I have seen the PCV come out or blow out was either with a SC'ed car or a NA car where someone had installed solid valve covers with no vent tube or breather. Get a Ford Motorcraft PCV if you do not have one already.

 

[nbutcher87]

The valve covers had vents on both covers I think it came out when my father in law pulled the plenum off and pulled the hose on the pcv and it must of come out then cause it started to leak the next day.

 

[87STANG]

replaced short block.... re used heads and intake .... cleaned all .... problem solved.