Turbo boost leak problem
#1
Senior Member
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Turbo boost leak problem
I have a significant boost leak- only when the secondary turbo kicks in at approx 4k rpm. It is heard on the right (passenger) side of the engine. I have the Efini y-pipe in place and all rubber connections are replaced with hard pipes. Where would you look for leaks? I intend to check the o-ring on the y-pipe, but I am puzzled why the leak happens only under secondary boost.
Ron A.
Ron A.
#2
Do It! Do It!
Join Date: Mar 2004
Location: Crofton, MD
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That's pretty common actually, search on that issue and you'll see.
But check the following:
* The vacuum hoses on the pressure chamber.
* The vacuum hose on the one-way check valve.
* The vacuum hose that goes into vacuum chamber.
* The vacuum hoses that go to turbo control solenoid.
But check the following:
* The vacuum hoses on the pressure chamber.
* The vacuum hose on the one-way check valve.
* The vacuum hose that goes into vacuum chamber.
* The vacuum hoses that go to turbo control solenoid.
#5
Senior Member
Thread Starter
Quicksilver rx7 said "It could be the rubber O-ring where the #2 turbo collector and the Y-pipe join."
That is my first guess. The leak is as bad as when the factory rubber connector is cracked- very loud. I've had the Efini y-pipe on the car for a couple of years, so I guess the o-ring could have dry-rotted and then broken into pieces which eventually blew out. Hope that is it.
That is my first guess. The leak is as bad as when the factory rubber connector is cracked- very loud. I've had the Efini y-pipe on the car for a couple of years, so I guess the o-ring could have dry-rotted and then broken into pieces which eventually blew out. Hope that is it.
#6
hm i think this is the same prob i have. i can hear a lot of air moving under the hood while in boost and im only getting like 4 or 5lbs boost. i thought it was a blow off valve stuck open or something, but ill check all that stuff. thanks
#7
2/4 wheel cornering fiend
Originally Posted by ronarndt
Quicksilver rx7 said "It could be the rubber O-ring where the #2 turbo collector and the Y-pipe join."
That is my first guess. The leak is as bad as when the factory rubber connector is cracked- very loud. I've had the Efini y-pipe on the car for a couple of years, so I guess the o-ring could have dry-rotted and then broken into pieces which eventually blew out. Hope that is it.
That is my first guess. The leak is as bad as when the factory rubber connector is cracked- very loud. I've had the Efini y-pipe on the car for a couple of years, so I guess the o-ring could have dry-rotted and then broken into pieces which eventually blew out. Hope that is it.
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#8
BOOOYAHHHH!
Originally Posted by areXseven
Check both 10mm nuts that secure the Y-Pipe Flange to the Secondary Turbo Housing.
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