anyone have any ideas as to why i might be getting too much fuel at idle its sputters and it smells of fuel and at a round 3000 rpms it sems to clear up and run smooth.

thanks

Doug

 

O2 sensor dead/disconnected.

Chris White

 

i was thinking the same thing....my first turbo blew out a seal and threw oil through out the entire exhaust system and into the intake(what a mess) and the 02 sensor looked alittle blackend ill try it tomorrow....thanks chris

 

You may also check the AFM or/and the coolant temp. sensor.

Regards,
AL

 

checked the afm already...coolant temp sensor is also on the list of things to check ...thanks al

 

Have you checked the vacuum hose to the FPR ?

 

mroberts
yes ive checked it over and over and FPR is a year old

 

My failing FPR started doing a similar thing, rich at cold idle, stumbled, ran OK above 3K but blew black fuel smoke under hard boost. Replaced FPR and no problem. Between the bad FPR and couple of vac leaks my plugs were absolutely coated in unburnt fuel, #4 was the worst by far.

 

Check (not in any order)
- Vacuum leaks
- O2 sensor
- Fuel Pressure Regulator
- Eng Temp Sensor
- Intake Air Temp Sensor
- Clean AFM connector (AFM sensor to wiring harness)
- Voltage at idle from AFM (should be 0.6-0.8v)
- If all checks out, I would start looking at the injectors.

 

thanks john
ill make sure they all check out as far as the injectors i put the stock back in just to see if i had a bad injector and nothing different

 

Are you runing non-stock injectors? Or you have 2 sets of stock injectors?
If you are running larger injectors or higher fuel pressure then it will run rich unless the software compensates for it.

 

i have 55 lbs injectors and software and i have stock injectors with software

 

Unless the software is dead-on it's hard to get the 55# to idle nicely. Try the stock injectors + software

 

yeah that is where i am at(stock injectors and soft ware) and still sputtering and fuel smell at idle