pcv help

fivespeedsteed · Oct 2, 2006

so i was feeling around for my pcv valve last night, and i grabbed a hose that felt loose. so i lift it up and there was my pcv valve. i guess i havent had a grommet h olding it in since ive had it? i feel around more and find the screen, take it out and its covered in crap. clean that off with acetone and put it back in. i broke the valve where the hose goes over it so i went to advance autoparts that night and get a new valve and a grommet. the grommet doesnt fit, it isnt big enough to hold the valve in the intake manifold so its kinda just sitting in there. but i guess this is the way my car has been since ive had it? should i order a grommet off latemodel restoration supply? wil that fit? im also gonna get a screen and a new motocraft valve while im at it. i want this valve to be held in the intake manifold, not just sitting there....what size or kind of grommet do i need? does the valve even need to be connected to the screen or is the screen just a vent? im lost?

HISSIN50 · Oct 2, 2006

Good call with the dealer/LRS PCV valve, grommet and screen. They should fit together nicely.

The screen sits in the lower intake, attached to nothing. It just knocks down some oily vapor.

You essentially have had a vacuum leak running with the valve loose in the intake.

Good luck.

cobra2798 · Oct 2, 2006

HISSIN50 said:
Good call with the dealer/LRS PCV valve, grommet and screen. They should fit together nicely.

The screen sits in the lower intake, attached to nothing. It just knocks down some oily vapor.

You essentially have had a vacuum leak running with the valve loose in the intake.

Good luck.

Explian this vacuum leak, my PVC is also loose, it just sits in its spot but can be pulled out very eaisly. I got a new one today thinking it needs to be replaced but if it being loose is a sign of another problem please elaborate.

HISSIN50 · Oct 2, 2006

cobra2798 said:
Explian this vacuum leak, my PVC is also loose, it just sits in its spot but can be pulled out very eaisly. I got a new one today thinking it needs to be replaced but if it being loose is a sign of another problem please elaborate.

The PCV is a closed system. It is a fully closed loop after the MAF (an introduction of non-metered air is analogous to a vac leak). If the PCV valve is loose or just hanging above the lower intake, air that is pulled up through the valve comes from the engine bay, rather than inside the crankcase (the product of blowby, which is already metered air). This can lead to a lean condition.

The Motorcraft PCV valve and grommet are the best way to fly IMHO. I've had aftermarket crap not seal well, as opposed to the last set of Motorcraft parts I installed, where I had to use a shot of silicone spray to get the valve to slide into the grommet.

If a PCV valve pops out when it otherwise has a tight seal, that can be an indication of excessive blowby (bad rings or serious forced induction with a stock PCV outfit). In general, it should not happen.

Good luck.

fivespeedsteed · Oct 3, 2006

okay so the rubber grommet on latemodel restoration supply will fit it? advance gave me a universal one that isnt big enough to hold the valve in my manifold, so its still just sitting in there.

fivespeedsteed · Oct 3, 2006

HISSIN50 said:
Good call with the dealer/LRS PCV valve, grommet and screen. They should fit together nicely.

Good luck.

are you being a smart ass? if not then thanks

8950HO · Oct 3, 2006

Buy the rubber grommet from the Ford dealer.

vristang · Oct 3, 2006

Personally, I have used a little silicone to hold the pcv in the grommet.

Then again it turns out I was fighting some blowby as well.

jason

fivespeedsteed · Oct 3, 2006

i just ordered a grommet and valve and screen off latemodel. thanks guys well see if this fits.

HISSIN50 · Oct 3, 2006

fivespeedsteed said:
are you being a smart ass? if not then thanks

I'm confused. Which part of my posts led ya to think I was being a 'smart ass'?

I've had very good luck with Motorcraft for the 3 parts needed.

The last set I got was from LRS and they were all Motorcraft.

Good luck.

fivespeedsteed · Oct 4, 2006

oh okay i thought you were. thank you. stuff should be gettin shipped today

pcv help

fivespeedsteed

HISSIN50

"How long does it take to get help in here?

cobra2798

New Member

HISSIN50

"How long does it take to get help in here?

fivespeedsteed

fivespeedsteed

8950HO

New Member

vristang

fivespeedsteed

HISSIN50

"How long does it take to get help in here?

fivespeedsteed

Similar threads

pcv help

"How long does it take to get help in here?

New Member

"How long does it take to get help in here?

New Member

"How long does it take to get help in here?

Similar threads

Privacy & Transparency

Privacy & Transparency