1989 f250 351 windsor PCV valve

drjoe171 · #1 (**permalink**) 06-13-2012, 02:08 AM

I do wish this was a joke but neighbor knocked the pcv
valve and hoses off trying to replace the vacuum line to the transmission.

All I have to look at is a pcv valve and a couple inches of vacuum line.

He said he dropped something under the intake manifold, maybe an elbow piece?

Anyway, I have the pcv valve and it rattles when I shake it.

- and a very limited view of a grommet in the top of the valve cover that you
really can't even get a finger tip on.
- and a clear view of a 5/16th" hose nipple on the intake manifold.

I'm assuming that the pcv valve goes into the grommet on the valve cover
that is virtually impossible to see and harder to even touch
and then the 5/16th line goes to the intake.

I've heard a rumor that they use an elbow into the valve cover since it's so tight,
and MAYbe that's what he dropped.

Not sure what to do and certainly don't want to push the valve cover pcv grommet
into the valve cover and lose it inside the engine.

Family needs the truck and I'm just stuck in the middle on this one.

Maybe just plug the vac leak at the intake and hope nothing gets into the valve cover until it can be fixed correctly?

Thanks a million

Scndsin · #2 (**permalink**) 06-13-2012, 07:27 AM

Yes there should be an elbow going into the grommet that routes the PCV valve parallel to the valve cover & out from under the upper manifold. There are many minor differences between years & models. I believe on my 150 it went toward the firewall before going up & forward to the top of the manifold.

I had a piece of formed hose left over from a hose kit & using the elbow, re-routed it forward & outside to make it easier to get to:

drjoe171 · #3 (**permalink**) 06-13-2012, 03:54 PM

Thank you for confirming my suspicions.

I'll try it today.
...so the bottom line is that the pcv valve needs to be
connected to the valve cover with an elbow and then to the intake manifold vacuum fitting.

Simply amazing that it's in such an impossible place to even see.
but nice to know that's exactly what it is.

Search key had quite a few interesting stories but none very clear
about how to actually fix it since most were intact to start with.

It was mostly, 'reassemble in reverse order.'

Thanks

Scndsin · #4 (**permalink**) 06-13-2012, 09:54 PM

If you've got the the valve, you can probably find an elbow in brass or pvc at your hardware store & fab up a line from the grommet to intake with some fuel line/vacuum hose. You might feel around behind the lower intake (there's a flat space there) where the orig may have fallen or it could be on the slope of the bell of the tranny. There are a lot of air injection vac lines back there too for it to hang on. If you haven't driven it, its gotta' be there.