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interesting boost problem. (somewhat long)

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Old 08-21-02, 01:26 AM
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interesting boost problem. (somewhat long)

well, ive had this boost problem for a while, and I hve finally had time to fix it. Im 17, so I do have other things that are more important, like studies and such ya know? well it started off, when I got my Defi boost gauge and installed it, I got 10 5-5 so basically, I only got 5 pounds after 4500 rpms. so, after checking some things out, replacing all the vacuum lines under the intake tubes, the 4 on the wastegate control, and the other selenoid right behind the vacuum tank, and the vaccum tank lines, I even looked pretty well under the manifold, and didnt see any popped off. I went under the car to switch it to non-seq temporarily and forgot that I was a retard and didnt check the TCA clip,and of course, it was popped off, so I popped it back on, and I thought yay! I can get full boost again! so I was running the car, and now when I hit secondary if I am flooring it, all my boost leaks out to about 1 pound. but if I keep the throttle to a minimum of having 5-6 psi through 4500 rpms, the boost sticks, and nothing leaks out. when it does I get this huge WOOOOOOOOOOSH!!!. so, I pulled off the couplers on the y-pipe, checked the y-pipe itself, and the hose coming off the intake manifold and its rubber tube. not the one on the lower intercooler though. I know there are a billion boost posts, but I would appreciate some direct answers ya know? thanks alot to anyone who attempts at helping me out
Stevo!
Old 08-21-02, 04:58 AM
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also if I let off above secondary, and stomp on it,I still hear the big WOOOOSH and get 1 or 0 pounds of boost
Old 08-21-02, 05:05 AM
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check your BOV, one of them might be leaking
Old 08-21-02, 08:22 AM
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If you still have stock rubber vacuum hoses, its time for silocone hoses and the dreaded vacuum hose job.
Old 08-21-02, 12:25 PM
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Go to this thread and read how to find boost leaks. https://www.rx7club.com/forum/showth...boost+problems
Old 11-30-02, 11:29 PM
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Did you fix it? I'm having the same problem after a hose job.
Old 12-01-02, 01:27 AM
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yeah I fixed it, did the vacuum line job, replaced the CC solenoid, flipped a check valve around, replaced one and I got my good boost back

Steve
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