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New engine running too rich

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Old 05-01-2005 | 05:50 PM
  #1  
305PhoenixAm's Avatar
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From: Sierra Vista, AZ
Car: 85 Trans Am
Engine: 383 TPI (Yes, TPI. Not for long though)
Transmission: 700r4
New engine running too rich

Just started the 383 today for the cam breakin, but the car is running really rich. I changed the injector constant to 19 from the base, stock AUJP bin I have, and the displacement constant to match 383 ci, but it is still getting too much gas, so I went to get the part # for the injectors, thinking that maybe the previous owner installed bigger injectors, but I can't find a match for the # on any list. It is 0280150235 . I'm not sure what's going on here, or maybe that is not the part #? Its the only number I found on them.
I haven't had a chance to datalog or anything, my attempt at building an ALDL cable failed so I think I'm just going to buy one. Tomorrow I will be able to hook the car up to a wideband O2 sensor to see exactly what it looks like, but for now I was just wondering if anybody knows what it could be that's making it run so rich, and if it would be a good idea to up the injector constant a little to try to get it evened out?
Old 05-03-2005 | 08:26 PM
  #2  
Vader's Avatar
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Either the injectoirs are larger, you have a fuel pressure problem, one or more of the injectors are leaking, the FPR is leaking internally, or you have a wiring problem in the injector harness.
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