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Old 03-29-2006, 01:45 AM
2000CAYukon 2000CAYukon is offline
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Re: 87 way too rich!!!

Quote:
Originally Posted by loneranger6886
I'll test it but i also replaced the fuel pump when we got the ruck, and the filter, ill go see what it says.
For a rich condition, you want to make sure the pressure is not too high.

Looking at my 90 Factory Manuals, you need to check:

- Fuel Pressure Regulator
- Canister Purge (make sure no fuel in canister)
- Map Sensor (Also check for vacuum leak at the Map)
- TPS - A bad TPS can fuel the PCM to think the gas pedal is be pushed causing more fuel to be delivered.

//2000CAYukon
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