Ares3985 Posted August 21, 2019 Share Posted August 21, 2019 So I recently solved all of my vacuum leaks. Or so I thought. I decided to do a smoke test before I get tuned. Couldn’t figure out where the smoke was coming from. Check all my hoses and finally realized it wasn’t from a hose. What is this sensor or whatever behind my intake manifold because that’s where it’s leaking Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Max Capacity Posted August 21, 2019 Share Posted August 21, 2019 Is that, that block off plug near the PCV ? 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Ares3985 Posted August 21, 2019 Author Share Posted August 21, 2019 Is that, that block off plug near the PCV ? Yes. It’s leaking from the white part. Would that effect boost and vacuum? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Max Capacity Posted August 21, 2019 Share Posted August 21, 2019 I'm going to guess yes. Ask your Tuner for sure. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Infosecdad Posted August 21, 2019 Share Posted August 21, 2019 If you have a stock turbo inlet that is a "monitor" of sorts for flow from PCV back into the intake. When someone goes with an aftermarket inlet, that white part is removed from the flow and just stashed somewhere. In stock form, it would be a leak. I think there is a rubber o-ring on the end of it that might be the source. If not, then it might be the nipple on the inlet that's worn out. You would probably need to pull it off the inlet to know why exactly its leaking. Link to comment Share on other sites More sharing options...
Ares3985 Posted August 21, 2019 Author Share Posted August 21, 2019 If you have a stock turbo inlet that is a "monitor" of sorts for flow from PCV back into the intake. When someone goes with an aftermarket inlet, that white part is removed from the flow and just stashed somewhere. In stock form, it would be a leak. I think there is a rubber o-ring on the end of it that might be the source. If not, then it might be the nipple on the inlet that's worn out. You would probably need to pull it off the inlet to know why exactly its leaking. I have an aftermarket inlet. I connected everything as it was w the stock one. So I just tried to pressure test the system and it will only build with the oil cap on. With it off nothing. Is t the pcv supposed stop air from going in? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Ares3985 Posted August 22, 2019 Author Share Posted August 22, 2019 After looking at a few pictures and reading posts from some other forums I see what you are saying. I can eliminate where it is leaking by connecting the hose directly instead of going thru the white tube. Then connect the jumper to the plug. I also answered my own question of why I can’t build pressure. It’s because I didn’t plug off vacuum lines. So I have been testing the wrong way this whole time. Luckily I never went above 7 lbs and engine still runs like a top. Tomorrow I will pull out that pcv bs waste of plastic. That should be my final leak Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now