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Discussion in 'High Tech Retrofits' started by 75Maro, May 5, 2019.
That appears to be the coolant hose for the TB heat, not vacuum.
You photos show the brake booster vacuum circuit, not the PCV circuit from what I can see. I'm looking for a hose connection that goes from the intake to the PCV either at the valve cover or the other entry to the block. Do you have that?
You are correct. I just googled ls1 PCV setup and realized I have the pass side valve cover connected to the intake (wrong). I need to reroute it to the TB nipple on the same side (pass side).
The small red breather is connected to the driver side valve cover and there is no routing to the intake (wrong) I also see from a google search that this isn’t correct either. I need to reroute this to the intake.
I will post updated pics in the morning thanks for your help so far guys.
Yup, I think you’re creating vacuum in the PVC while it’s running and when you shut it off it releases. The the valve cover should be drawing in fresh air that’s metered. Ie valve cover hose connected to the throttle body. Where the crank case air exits (driver valve cover) connects to the intake manifold to be burned. Since your fuel injected, you shouldn’t have any unmetered air entering the engine. Get rid of the red filter and route that to the intake manifold. Don’t forget the check valve.
This is great info.
I can’t make out the words in the picture. What are the comments on the blue line.
one says clean side the other says dirty side
Green is clean fresh air from the TB, the blue is dirty coming out of the engine to enter the intake manifold to be burned. The check valve is so air can only be pulled into the intake and not out of it.
Any suggestions on the check valve.
Update: the hissing sound now last about .5 second after shut off. Thanks for all the help. Only thing missing now is the check valve.