Running really rich and bad idle - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

str33tpr3p · 07-29-2012, 10:16 AM

Ever since i put in my walbro fuel pump my car has been running extremly rich which makes sense with the fuel pump but any way to maybe lean it out a bit, i was thinking replace the o2 sensor but not sure if its going to change much. On start up its running about 10.1 and when driving it is always between 10.5-10.0, as well as on start up its shooting out carbon out the pipe.

Also the idling problem, when i turn car on even in normal weather the idle goes to about 1.5 than drops to .5 and jumps in between for a few minutes before it evens out, i have replaced my spark plugs, cleaned my idle air control and im running out of ideas so if you have any feed back please let me know.

Thanks , also the engine is a s14 blacktop.

07-29-2012, 10:16 AM	#1
str33tpr3p Leaky Injector Join Date: Apr 2012 Location: canada Posts: 56 Trader Rating: (0) Feedback Score: 0 reviews	Running really rich and bad idle Ever since i put in my walbro fuel pump my car has been running extremly rich which makes sense with the fuel pump but any way to maybe lean it out a bit, i was thinking replace the o2 sensor but not sure if its going to change much. On start up its running about 10.1 and when driving it is always between 10.5-10.0, as well as on start up its shooting out carbon out the pipe. Also the idling problem, when i turn car on even in normal weather the idle goes to about 1.5 than drops to .5 and jumps in between for a few minutes before it evens out, i have replaced my spark plugs, cleaned my idle air control and im running out of ideas so if you have any feed back please let me know. Thanks , also the engine is a s14 blacktop.