PCV oil problems - Help please

[Jaym14]

Can anyone tell me if I can check to see if the baffle is installed on the lower intake without having to pull it? Its a performer RPM II, if that matters. I found the ford part # F6TZ-6L678-AA for their baffle but it appears to be discontinued anyone. Does Edelbrock sell their own version?

 

[Blandnuts]

Pull out the pcv valve and screen, then take a screwdriver and see if it bottoms out on the baffle.

 

[Jaym14]

looks like I'm going to need to custom make some baffles... any advice?

 

[GT_Rich]

This advice will probably get beat down, but I'll give it anyways. I have a Cobra intake and read many posts about oil consumption issues, so I avoided the problem altogether with vents. On my lower intake I have the screen in place and then I have a small K&N type breather on it, and on the pass. side valve cover I have a breather in place of the standard oil fill cap. I don't leak oil, I don't burn oil, and it's simple. Plenty of engines ran just fine before the concept of closed loop venting. Just my two cents.

 

[Jaym14]

I was considering this also Do you still have the line hooked into the TB from the oil filler?

 

[GT_Rich]

Nope, I have a really simple vacuum setup.

 

[Jaym14]

ok here's an update to this thread:

Over the last week or so I've read at least a few hundred posts in various forums regarding the operation of PCV systems and controlling PCV oil consumption problems. My new "expertise" in this area has led me to 2 ideas that I think might help solve my oil consumption problems with minimum expense and effort while maintaining a stock like functioning PVC system. Here's what I'm thinking, and PCV experts please chime in on this

First option:

Block/plug the PCV in the lower intake and relocate the PCV to the drivers side VC and route this to the stock vacuum hook up on the upper intake. I will also run a air/oil separator or air/oil separator tank on this line.. either (JEGS 52205 or Moroso 85471 - Moroso Air/Oil Separator Tanks-Overview – SummitRacing.com. In addition, the stock oil filler/TB line will be intact and I will stuff the oil filler neck ( I have the tall Trick Flow oil filler) with some coarse wire mesh scouring pad material to act as a condensation media for oil vaper/mist.

Rationale for this option:
I'm consuming massive amounts of oil through the PCV in the lower intake, so much so, that I believe a good amount of "splash" is occurring and that I'm not simply drawing in oil mist. A well placed PCV on the drivers VC should reduce splash exposure and still function as efficiently as the stock location.

Option Two:

Install a second PCV in the drivers VC and run it to a T fitting which will mate the stock PCV with the new PCV and then install an air/oil separator after this fitting which would then continue on into the upper intake vacuum connection. The oil filler/TB line and filler neck would be handled the same as in option one.

Rationale for this option:
A second PCV would allow lower overall gas velocities throughout the PCV system which should (in theory) allow less oil to be sucked up and into the system.

Well let me know what you guys think, I really need to solve this issue.

 

[vristang]

If there isn't a baffle on the lower intake, then I would start out by installing one.
Couple bends on a sheet of aluminum flat stock, and a couple holes drilled and tapped.

When did the oil consumption start? Were parts changed around that time?

Have you done compression and leakdown tests?

A separator from home depot/lowes works well to VERIFY that the oil is coming up the pcv hose...

 

[Jaym14]

If there isn't a baffle on the lower intake, then I would start out by installing one.
Couple bends on a sheet of aluminum flat stock, and a couple holes drilled and tapped.

When did the oil consumption start? Were parts changed around that time?

Have you done compression and leakdown tests?

A separator from home depot/lowes works well to VERIFY that the oil is coming up the pcv hose...

Thanks for taking the time to respond. My motor has about 3000 miles since it was built. It was originally set up with a breather in the PCV in the lower intake and the two VC connected to a breather tank with some hose and a T fitting... so basically just a breather set up. I experienced oil being blow out of the rear main and the oil pan but the motor never burned any oil. My car was off the road the entire winter. When I was getting ready to get it back on the road for the summer I decided to hook the PCV up to try and solve the oil leak issue. It worked, not a single drip anywhere since the PCV was hooked up.. however, since the PCV has been hooked up I've started burning oil. There is an excessive amount of oil in the tube when I remove the PCV. I'm sure this is where the oil is coming from, the motor does not need to be refreshed or anything like that. I have done a compression test also and the motor is right on the money.

 

[Blandnuts]

A leak down test would be the best way to find a problem rather than a compression test. The setup I ran on my last mustang with a china cobra was;
1. Passenger side valve cover with a pcv valve running to the throttle body. (pcv valve had the ability to let some pressure pass back through, not sure what model). I also had no problem of oil being consumed prior or after this install. baffle installed on vc
2. Driver side valve cover with a pcv valve running into an oil seperator (from home depot) to a T, to both vacuum hookups under the intake. baffle installed on vc
3. Original pcv valve was deleted.

I tried a few other ways and this one had the best results.

 

[jrichker]

That much oil & pressure says the rings have not seated properly.
See the link in my sig to build your own leak down tester.

 

[Jaym14]

A leak down test would be the best way to find a problem rather than a compression test. The setup I ran on my last mustang with a china cobra was;
1. Passenger side valve cover with a pcv valve running to the throttle body. (pcv valve had the ability to let some pressure pass back through, not sure what model). I also had no problem of oil being consumed prior or after this install. baffle installed on vc
2. Driver side valve cover with a pcv valve running into an oil seperator (from home depot) to a T, to both vacuum hookups under the intake. baffle installed on vc
3. Original pcv valve was deleted.

I tried a few other ways and this one had the best results.

Did a little more research and messing around with the car today. I'm thinking of going with a set up nearly identical to what you described above. I have trick flow non baffled valve covers currently installed on the motor. I would replace those with these Ford Racing tall baffled valve covers, delete/plug the stock intake PCV, and install a PCV on the drivers valve cover with an inline oil/air separator. I would leave the TB/oil fill line intact also. I think this would work fine and solve my oil consumption problem.

 

[Jaym14]

That much oil & pressure says the rings have not seated properly.
See the link in my sig to build your own leak down tester.

Lovin the site bro!! Lots of good info!

 

[Brando5641]

im with JR. i think you have A LOT of blow by.

I had a buddy that had a 400 that was blowing oil out of the pvc so bad that he ran the hose strait into a oil bottle and capped the motor

Without a PVC and just having 2 vents you will build up moisture and the motor will build up sludge.

Do a dry compression test and a wet one and tell us the diff.

 

[Jaym14]

Here's the latest...

I seem to have solved the problem... I need to drive the car a bit more to be certain, but I'm confident enough that I solved it to be please with myself .

Here's what I did.....

I plugged the stock pcv opening on the lower intake (my intake is not baffled) and installed a baffled PCV grommet from summit ($1.50) and a stock motorcraft PCV in the passenger side valve cover with aJegs inline oil/air separator . This is all hooked up to the back of the upper intake.

So far, I've stopped burning oil (no more smoke!!!!) and no oil is leaking out of the seals. I'll update again after I get some more miles on the new set up!!!