The spot between the bottom of the Throttle body and the TPS.....The Shaft location where the TPS slips on, that is where the leak is coming from per the Smoke Test I did.
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Last (I believe) vacuum leak, but what is causing it? I see where it is coming from
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It's likely that the bearings/seals on the throttle shaft are worn. You can rebuild it, there's a writeup either here or a video on YouTube about it. It's kinda tricky, but doable. Also, any used TB is probably going to be leaky too. Good luck!sigpic
1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED]
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