yellow line is the oil catch can setup

green is the bov to brake booster line


is this correct? from what i have heard this is what it sounds like i could not get to the fuel pressure regulator its to tucked back to tight

Catch can is wrong.

can you post it correcT?

i tried tieing my BOV into the FPR and tested the line it is pushing fuel through it maybe i tied into the wrong part?

Valve cover -> Catch Can -> Intake (Before turbo)

You're essentially trying to suck the air out of the crankcase and making it go through the catch can to filter the oil out of the air.

my1993nissan240sx wrote:


yellow line is the oil catch can setup

green is the bov to brake booster line


is this correct? from what i have heard this is what it sounds like i could not get to the fuel pressure regulator its to tucked back to tight

The clear line that goes from the catch can to the intake manifold, what is it hooked up to? Is the factory PCV system intact or has it been modified?

Here is an image of the best possible way to do crankcase evacuation. It requires 2 catch cans, but it's truly the only way to keep the blow-by out of the intake. The only possible alternative to hose routing would be routing the the large catch can between the PCV valve and the intake manifold instead of the pipe that is pre-turbo.



There are 3 hoses that go to the FPR, 2 are fuel and one is vacuum. The vacuum line is the smaller of the 3. If you have the vacuum line going from the brake master cylinder to the BOV you'll be fine. You can "T" into any vacuum line that goes to the intake manifold.

can you show a pic of the single can setup because i do not want to get another and its the stock pcv setup clear hose is going to my pcv valve

Connect your PCV back to your intake manifold like it is from the factory. Then use the diagram with the smaller filter.

can i run pcv to hot pre turbo intake?

also can i just put a vent on the valve cover

Yes