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1G Boost leak test

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apckofllamas

10+ Year Contributor
190
2
Aug 30, 2012
Wellington, Ohio
as soon as i start putting air into the stem its coming out from around the throttle body so i replaced the shaft seals. i still have a leak coming from that area. i have been using soap and water and i dont see any bubbles forming. also my car runs good on a cold start but when i start it after its been run its very slugglish and dosent build boost at all. anyone know whats going on?

thanks
 
This is a good how-to read on the throttle body seals. TB Shaft Seals VFAQ
They can be a pain to get to seal up sometimes.:|

On another note, if it's not building any boost at all, maybe you need to check your wastegate actuator, the arm, and the flapper door to make sure they are working correctly. If you take the arm off the flapper door it should move freely and it should be all the way closed when the rod is attached. Maybe it's hanging open when hot which is not allowing you to build any boost. :idontknow: Good luck!:thumb:
 
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