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  #1  
Old 09-04-2002, 01:21 AM
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running lean

If my air/fuel ratio is running lean what can i do to correct it short of getting an aftermarket fuel controller?
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Old 09-04-2002, 02:23 AM
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Lean???

thats sorta odd, most hondas i've seen go rich before anything. Check your fuel system. I'd say maybe replace the fuel filter or espically the 02 sensor.
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Old 09-04-2002, 04:45 AM
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it might be your fuel pump cause cars that old the fuel pump tends to pump less. get a fuel pressure regulator
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Old 09-04-2002, 09:32 AM
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well i just dropped a d16z6 with a 90 CRX si computer in my ride. It started flashing oxygen sensor engine code even though i've been using the same oxygen sensor since i bought the car and its been fine. i know its running lean because i drove it hard on the highway for about an hour and when i stopped, the catalytic converter was so hot i was smoking. plus the car runs really hot. Maybe i just need to retard the timing a little even tho i always run 91 octane fuel...
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Old 09-04-2002, 12:23 PM
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which fuel rail & pressure regulator did you use?
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Old 09-04-2002, 12:45 PM
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i used the ones off my 5th gen intake
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Old 09-04-2002, 01:04 PM
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are you running the p28 ecu or the CRX Si one?
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Old 09-04-2002, 01:46 PM
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Red face

OK...this isn't a flame, but why do peeps run an ECU that isn't made for the engine they have in the car, and then ask questions like "why is my car running poorly?" without providing the history upfront?

I think it would have been nice to say "I have a d16z6 with a pm6 ECU, and it is running lean....any suggestions?" then you can get help a lot quicker.

So when you put in the d16z6 - did you keep your 4th gen intake manifold, etc??
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Old 09-04-2002, 03:40 PM
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Quote:
Originally posted by 91civicDXdude
well i just dropped a d16z6 with a 90 CRX si computer in my ride. It started flashing oxygen sensor engine code even though i've been using the same oxygen sensor since i bought the car and its been fine. i know its running lean because i drove it hard on the highway for about an hour and when i stopped, the catalytic converter was so hot i was smoking. plus the car runs really hot. Maybe i just need to retard the timing a little even tho i always run 91 octane fuel...
When a cat gets so hot it's smoking it's usually from the car running too RICH from my experience
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Old 09-04-2002, 06:28 PM
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sorry let me clarify. i do have a pm6 ecu with d16z6. I used the intake manifold from the d16z6
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Old 09-04-2002, 09:34 PM
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Quote:
Originally posted by darolh


When a cat gets so hot it's smoking it's usually from the car running too RICH from my experience
Cars run hotter when lean.
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