sr20 idle problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

240ss · 09-20-2010, 05:48 PM

I have a s13 with a black top sr20. My setup is pretty much stock, t25, 370cc inectors, fmic, walbro FP, ect. The problem is if i am driving and push in the clutch my idle drops down and usually cuts off. The problem gets progressively worse as the engine warms up. when it is trying to die i can hit the gas and hover it around 1,500-2,000 rpm for a lil and most of the time i get it to chill and idle by its self..

Also once warm it will back-fire every so often. I do not have any loss in power, and my ic piping is all tight. I am not sure if this is connected to the idle problem.

Someone has suggested my a/f ratio is off. Im in the process of getting an a/f gauge and possibly a safc? anyone have any other things i should check out?

09-20-2010, 05:48 PM	#1
240ss Zilvia Member Join Date: Jan 2008 Location: virginia Age: 34 Posts: 282 Trader Rating: (7) Feedback Score: 7 reviews	sr20 idle problem I have a s13 with a black top sr20. My setup is pretty much stock, t25, 370cc inectors, fmic, walbro FP, ect. The problem is if i am driving and push in the clutch my idle drops down and usually cuts off. The problem gets progressively worse as the engine warms up. when it is trying to die i can hit the gas and hover it around 1,500-2,000 rpm for a lil and most of the time i get it to chill and idle by its self.. Also once warm it will back-fire every so often. I do not have any loss in power, and my ic piping is all tight. I am not sure if this is connected to the idle problem. Someone has suggested my a/f ratio is off. Im in the process of getting an a/f gauge and possibly a safc? anyone have any other things i should check out? Last edited by 240ss; 09-22-2010 at 10:21 AM..