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Huge boost leak

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90AWDTalon

20+ Year Contributor
877
3
Jan 5, 2003
Everett, Washington
I'm doing some tuning on a friends talon. Before doing the tuning I wanted to do a leak test. Well there is a leak some where so big that I can't even pressurize the system. I however cant seem to find the leak, I squirted every thing down with soapy water but still couldn't find the leak. The car has a FMIC with short route piping. I took apart the upper intercooler pipe at a coupler before the BOV, and pressurized the system from there to the engine. I found leaks at the throttle body seals and 3 out of 4 injector seals. I then plugged the other end of the coupler I took apart and tried to pressurize the system at the turbo again. Once again I still couldn't get it to pressurize and I still couldn't find any leaks. The car builds and holds boost, albeit alittle bit slow I think. Its a GT35R and is curently running low boost until we figure out whats going on, it hits 1.2-1.3 bar a little north of 5000 rpms, it'll make a couple of psi of boost by just breathing on the throttle, but takes along time to get to full boost.

Unless anyone has any idea's all I can think of is to take everything apart and test all the componets seperately?
 
crunchymilk said:
test again but hook it up just to the throttle body, then work your way out

I had it hooked up before the throttle body and after the intercooler, it pressurized but leaked at the throttle body seals and injector seals. The huge leak that prevents me from pressurizing the system is befor that.
 
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