Still smoking on deceleration

[peste noire]

how the pcv look like? and how much is it new?

 

[MA67SupraTurbo]

Look at the link I sent, it's just hoses, and the pcv valve is like 8 bucks on a JZ. You pretty much want the air under the valve covers, to see vacuum, but not boost. Pre-turbo (accordian) is easiest, but after turbo, a pcv valve is used, as it let's air out of valve cover, but once boost hits, the check valve shuts, so you don't pressurize the valve cover; that would suck.

 

[peste noire]

i looked but didnt see it. i thought the pcv valve on a 7mgte was a piece of pipe thats connected on the throttle body?

 

[kakanator]

No PCV of any sort?



IDL=Idle. The TPS has contacts that open when you accelerate. They close when you take your foot of the pedal. That is deceleration fuel cut. But I am thinking that isn't your issue. You can check for a 51 anyway.

The PCV doesn't cause a car to smoke when operating correctly. However, if you have nothing, you will have higher than normal crank pressure, pushing oil from where ever it wants to give. I think that is the core issue.

the tb check valve is blocked off and the two valve cover outlets are running there own line to atmosphere and i blocked of the accordion returns for the pvc.

 

[peste noire]

so is it still smoking? want to see if it can be the pcv.

 

[kakanator]

it only smokes if im deccling for a long period of time like 5 to 10 seconds no other times but it also doesn't do it ever single time i deccl.

 

[MA67SupraTurbo]

it only smokes if im deccling for a long period of time like 5 to 10 seconds no other times but it also doesn't do it ever single time i deccl.

Turbo

 

[S.A. supra]

So easy to check, but he has yet to address.

 

[kakanator]

Yea it is just been busy that's all I have today to do it so Ill get down there and pull some clamps and see what is going on.

 

[kakanator]

OK so i did a oil change and at the same time did the valve cover gaskets and checked the fender to TB piping and it was all dry. Also checked the one for part that goes into the intercooler and it was all dry so no oil that I can see from the compressor side.

 

[MA67SupraTurbo]

OK so i did a oil change and at the same time did the valve cover gaskets and checked the fender to TB piping and it was all dry. Also checked the one for part that goes into the intercooler and it was all dry so no oil that I can see from the compressor side.

Then it could be the seal from the turbine side. Mine smoked white-ish smoke (not blue, even the blue is really white) and had no oil down pipes and compressor was dry. I bought a rebuild kit for $54 shipped and did it myself. turbo was stout like a tank (GT4088) and had no problems with the new seal. Just make sure to clean where the new seal sits real good. Seal simply looks like a piston ring had a baby. Buy a kit and do it yourself, it's easier than you'd think. What setup/turbo/return-line do you have?

 

[kakanator]

That is what I was thinking tomorrow I'm going to do my r154 swap and have to take of the down pipe off. Ill look at the turbine side and see how it looks. Stock ct with stock oil return with stock accordion and I have a ddp 3 inch to 3 inch strait pipe running 10 pounds.