Crankcase ventilation issue

Topic: Crankcase ventilation issue (Read 1940 times) previous topic - next topic

Crankcase ventilation issue

September 15, 2010, 09:30:59 PM

So one of the issues with my bird right now is oil burning. Under decel you can smell it bad. It doesnt really smoke. I think a new PCV fixed it burning/blowing under boost, though I cant get into boost too much because I keep blowing my top IC coupler.

I have the stock PCV setup on the drivers side.

On the passenger side I have the stock VC breather, but with a hose running to a catch can, and then from the can to the line that goes to the turbo inlet.

Im not seeing any oil going to the catch can. The clear vinyl hoses are clean.

When I have the car running, I can pull the hose off and theres no vacuum at all.

I can blow into the hose, so its not blocked up or anything.

Why is this? Shouldnt there be a constant vacuum on the VC breather when the engine is running?

My intakes getting a lot of oil in it. Doesnt smoke though. But like I said under decel you get the smell of it a lot.

Crankcase ventilation issue

Reply #1 – September 16, 2010, 10:10:08 AM

Okay so I finally got my intercooler to stay on. Run it up through the gears with about 15 psi and it gets really smelly inside the car. My PCV is good. What gives?

Crankcase ventilation issue

Reply #2 – September 17, 2010, 10:05:31 AM

I have a very similar problem on my 5.0 SO motor. If the heater is on I get an oily smell in the car. It definitely seems to have something to do with the PCV valve or such. For the life of me, I can't pinpoint the problem. I ended up moving back to school, so the car is sitting at home, lol.

Crankcase ventilation issue

Reply #3 – September 17, 2010, 10:17:42 AM

The turbo inlet isn't going to be a huge amount of vacuum on your catch can.

If your intake is getting oil in it...your PCV valve isn't "good". Is it the Ford one?

I have no PCV valve in my set up. I run both the crank and v/c vents to a vented catch can. I have a small hose from that connected to the turbo inlet, mainly to catch and burn off the bulk of the stuff venting to the catch can. I get no oil in the catch can, and the intake is clean.

Crankcase ventilation issue

Reply #4 – September 17, 2010, 11:14:03 AM

Pcv is a brand new motorcraft and passed the blow test.

Crankcase ventilation issue

Reply #5 – September 17, 2010, 06:39:46 PM

You need to go with a catch can, or a breather setup. Eitherway, you should delete the PCV.

Crankcase ventilation issue

Reply #6 – September 18, 2010, 05:24:47 PM

Quote from: bhazard;335875

Pcv is a brand new motorcraft and passed the blow test.

What exactly is the blow test?

Crankcase ventilation issue

Reply #7 – September 18, 2010, 07:06:36 PM

ditch the PCV, do this:
http://stinger-performance.proboards.com/index.cgi?board=faq&action=display&thread=732

i used this method with a different catch can cause the moroso number stinger calls out is $80+
moroso 85406 is what i used, and can be found for as little as $28.15 online last i checked
http://www.moroso.com/catalog/categorydisplay.asp?catcode=13400

Crankcase ventilation issue

Reply #8 – September 18, 2010, 07:18:42 PM

Quote from: Haystack;335903

You need to go with a catch can, or a breather setup. Eitherway, you should delete the PCV.

I put a catch can in line with the valve cover breather. Trouble is nothing is being pulled through it.