Carb leaking
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Member
Joined: Aug 2007
Posts: 128
Likes: 1
From: South beloit, IL
Car: 91 Camaro LS1
Engine: LS1
Transmission: T56
Axle/Gears: 9" 4.11
Carb leaking
Im having trouble with my carb when i turn the fuel pump on it doesnt hold the pressure i have it set to 8psi now...im not quite sure what it was at maybe thats what caused the problem im not quite sure but the fuel appears to be leaking out of the carb through these holes on the base plate and on all the outside holes on the carb itself ( i have a woodscrew pointing towards the holes in which the fuel appears to be coming out of) any help from you guys would be appreciated...i just would like to know what the holes are for and how to fix it so i can get back on the road thanks
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Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Carb leaking
that is your idle circuit. the fuel pressure needs to be 6-7psi. 8psi can cause flooding and fuel leaking where it shouldn't be.
Thread Starter
Member
Joined: Aug 2007
Posts: 128
Likes: 1
From: South beloit, IL
Car: 91 Camaro LS1
Engine: LS1
Transmission: T56
Axle/Gears: 9" 4.11
Re: Carb leaking
ok cool ill turn it down then so what do i need to fix this now or will it stop leaking when i turn it down
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iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Carb leaking
i would also replace the metering block gaskets and power valve. those can also cause that. might as well install a whole renew kit.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The only way fuel could be leaking from those holes is if the gasket is messed up or missing.
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Thread Starter
Member
Joined: Aug 2007
Posts: 128
Likes: 1
From: South beloit, IL
Car: 91 Camaro LS1
Engine: LS1
Transmission: T56
Axle/Gears: 9" 4.11
Re: Carb leaking
ok you see i took it apart and the gaskets seem to be fine but ill just have to replace them anyways...are you talking the metering block gaskets?
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I'm talking about the throttle plate to main body gasket. Your pics have those deck screws (I cringe every time I see that pic with those screws in the throttle plate holes) pointing at the throttle plate and main body.
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