last night i took out some air induction parts to the turbos. as i expected there was a leak on the primary turbo induction connector pipe- one that physically touches a gasket. if you see the pic provided below, it is the part that is connected with light green hose and short pink hose close to the primary turbo. there are two plastic nipples, and the smaller nipple was broken off and the hose wasnt even connected to the nipple. i fixed the problem by applying some epoxy glue on and around the broken nipple. im pretty sure the broken piece securely connected to the main induction connector pipe like it was supposed to be. but then, when i test-drove it, i was seeing 14psi+ on the primary and 0psi on the secondary. huh? before the little repair, i was seeing 8-5-5. any ideas??? i didnt touch any solenoid valves, check valves, or anything under upper manifold.

hmm.... need a little help here.

some symptoms ive been having since 8-5-5...
- running really rich
- vacuum around 14~15
- small backfiring with hi-flow cat installed.

any input will be greatly appreciated.

 

Are u sure u didn't block off the vacuum hose with the epoxy?
The 14 psi i sdue to the wastegate control not opening at the preset 10psi. The 0-0 transition to secondary means the prespool did not open and the turbo control did not open. You need to trace those vacuum control lines and see which ones was touched during ur trouble shooting process.

 

thanks a lot Trexthe3rd.

i might switched those two vacuum hoses. those two hoses have almost the same length but different inner diameter sizes if my memory serves my correctly. ill try to work on my car tomorrow. thanks again for the great info.

oh, any other opinions?

 

i got 12-0-0 when that little black box on top broke on me