Ok so a few weeks back I went on boost using the split second enricher and 440cc injectors for fuel. I realized I still had the crank case vent tube hooked up to the (intake) pipe now charge pipe which was causing the car to spew smoke. I originally overlooked that and though that the turbo was bad so I had the turbo rebuilt and it was still dumping smoke. I looked over the setup and realized that in my haste to get the car together and running I just hooked the vent tube back normally. This was basically causing me to pressurize the crankcase and wasn't allowing the oil to drain, so it was backing up into the turbo. I've since corrected that and although the car doesn't smoke like it did it still does when I step on it. I did a compression test and they were all low in my opinion

Cyl#1 Cyl#2. Cyl#3. Cyl#4
165. 165. 165. 165

All even but low, my though is rings but I still have to do a leak test

Any thoughts?

 

I spoke to a guy at toyota and he told me that min spec was 145psi. Anywhere I between 145psi and 189 psi is fine? Although I have been running with the Pcv capped off

 

How many cranks u might be off by one more

 

Each cyl within 1 psi of the others sounds great. What do you mean by "PCV capped off". I hope it's not what it sounds like...

 

6 cranks watching the gauge as it jumped 6 times.

 

I had it capped off when I was testing for blow by and trying to figure out what was causing the oil to come out of the turbo. As of now it sits like stock with an air compressor filter inline, like I said though it's still smokes when I stomp on it and settles down after a few seconds. I guess I need to get some kind of catch can installed.

 

Which side did you cap off? Both? Where did you place the filter? Intake or manifold side? If you have any photos of your setup it would help a lot.

 

I capped the Pcv side off and had a breather on the vent side. Now I have the vacuum line from the manifold going into an air compressor filter and into the Pcv. Just like stock aside from the little compressor filter

 

I made a pipe today for the inlet on the turbo and installed a nipple on the pipe to draw vacuum while in load and had it hooked up to the Pcv. When I put the pipe on no matter how stiff or loose I made the bov, I got terrible flutter rather than a whoosh. I guess I should say that normally I just have a filter on the the compressor housing inlet no piping. Adding the few inches of piping made the bov act nuts

 

All I can suggest is to keep the PVC system as close to stock as possible with no added restriction. It's been working for me for the last 30k miles. I have no idea why adding an intake pipe would affect the BOV. Wish I could be more help but I wish you luck.

BTW, any chance your turbo seals are leaking?

 

post a video

 

I would not cap the PVC at all on a street car I would buy a catch can and hook it up the intake manifold and pvc

 

Well I have a little air compressor filter inline with the pcv manifold vacuum.

 

I'll post up a video tomorrow. Off to work I go

 

im local if u even want to stop by

 

Well it's dunzo! Cyl 3 and 4 are wet, rings are shot. Off to Subaru tomorrow to get a wrx

 

It's very unusual to get perfect compression test results when 2 cyls have bad rings. Any idea what may have damaged the rings?

 

I changed out the wastegate to a new tial and I guess during the install I overlooked or just didn't connect the vacuum to the compressor housing. In third gear I punched it and the tires broke loose and before I realized the boost had already spiked to 13psi+ . I pulled the plugs and cyl 3 was a little wet and I didn't notice it on cyl 4 though so I pulled the manifold and turbo off and cyl 3 is wet and cyl 4 is a little less wet. I have still yet to do another compression test since yesterday but if it's not rings then could it be valve seals?

 

That sucks but hopefully there's no serious damage. Do another compression test and then squirt some motor oil into each cylinder and test again. If the compression goes up it indicates bad rings. I doubt it's valve seals but it is possible. A loss of compression that doesn't increase when oil is added to the cyl indicates valve seals. Good luck dude.

 

I doubt valve seals too. That ull notice more during start up. I have a similar issue goin on right now from running the car too rich under boost. Im gonna try tossin a catch can in and pray for the best. Keep me posted w ur find bud and ill do the same.