TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

305 running very very rich

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Old Nov 5, 2009 | 12:22 PM
  #1  
ThreeOhFive's Avatar
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From: Southern Wisconsin.
Car: BMW 330i ///M Sport
Engine: M54 DOHC I6
Transmission: 5 speed
Axle/Gears: Stock
305 running very very rich

92 rs is running incredibly rich on start up. after driving it for a minute or two the white smoke stops coming from the exhaust, but if you get on it really hard you can smell gas. after the car is shut off, if its only been running for a few minutes white smoke comes swirling out of the exhaust pipes... also when it is revved, the rubber hose coming from the radiator restricts.

here is a pic of it on start up...white smoke just comes pouring out of the exhaust. it has gotten noticibly worse since it has gotten cold out.
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Old Nov 7, 2009 | 01:54 PM
  #2  
SiCkRs's Avatar
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: 305 running very very rich

I have the exact same problem only i store mine for a week then this started happening so i am just gonna swap out the 305 and put a 350 hopefully would fix the problem
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Old Nov 7, 2009 | 02:24 PM
  #3  
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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: 305 running very very rich

so is this a 305 tbi or the 3.1 port injection? any way, i'd check the fuel pressure, timing, codes, etc...
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Old Nov 7, 2009 | 02:52 PM
  #4  
SiCkRs's Avatar
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: 305 running very very rich

mine is in a 305 how can i check the fuel pressure i dont know much of this but i could learn, as for codes the check engine light doesn't turn on thats whats weird
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Old Nov 7, 2009 | 03:09 PM
  #5  
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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: 305 running very very rich

to check fuel pressure on tbi you have to remove the fuel filter and "T" in your gauge. i believe pressure should be 9-13psi. if your engine light will never come on the bulb may be blown. in that case you would not be able to check flash codes. you would have to have an OBD1 reader. autozone could check it for you.
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Old Nov 7, 2009 | 03:32 PM
  #6  
SiCkRs's Avatar
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: 305 running very very rich

I will tell the mechanic tomorrow since he is going to replace my tranny
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