Extremely Rich
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Joined: Jul 2006
Posts: 1,132
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From: Aloha, Oregon
Car: '91 Camaro Z28, '85 Camaro Z28
Engine: LB9, LB9
Transmission: T5, 700r4
Axle/Gears: Eaton 3.73 Posi, 3.23 Posi
Extremely Rich
Well last month I dyno'd my '85 Camaro Z28 with an 87(?) LB9 engine in it. We noticed it ran rich...very rich...
Engine is stock, nearly 150K miles, cat back exhaust, gutted lid, TB coolant bypass. the car runs 15.4's at 87-88mph.
Question is, why is my engine running so rich and what can I do to lean it out?
Engine is stock, nearly 150K miles, cat back exhaust, gutted lid, TB coolant bypass. the car runs 15.4's at 87-88mph.
Question is, why is my engine running so rich and what can I do to lean it out?
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Joined: Mar 2009
Posts: 870
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From: Brick, NJ
Car: 91 Trans Am
Engine: 355 TPI
Transmission: Built T-5
Re: Extremely Rich
any codes?....i had a problem running rich and i swapped out the MAF and that seemed to do it....but now my ECM is going whacky
Thread Starter
Supreme Member
iTrader: (1)
Joined: Jul 2006
Posts: 1,132
Likes: 11
From: Aloha, Oregon
Car: '91 Camaro Z28, '85 Camaro Z28
Engine: LB9, LB9
Transmission: T5, 700r4
Axle/Gears: Eaton 3.73 Posi, 3.23 Posi
Re: Extremely Rich
Havn't checked the fuel pressure yet, I last set the timing at 6*, I'll double check it.
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