Vaccum leak from throttle shaft?
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Supreme Member
Joined: Dec 2001
Posts: 1,418
Likes: 1
From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
Vaccum leak from throttle shaft?
Has anyone heard of this? This is where the mechanics traced my vacuum leak to. But the throttle body is only a little over a year old AND it never had any problems on my 305, and the vaccum leak has been there since I got the engine running.
Supreme Member
Joined: Jan 2001
Posts: 1,047
Likes: 2
From: Lincoln, Nebraska
Car: 1988 Firebird, 2000 GTP
Engine: 327
Transmission: 700R4
Axle/Gears: 9" posi, 4.11
It makes sense that air would leak through there.. but it really shouldn't be enough to effect anything unless it is a pretty large gap between the shaft and the body. the clearance should be so small that it's really not a major problem.
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