Strange misfire problem??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Negreac · 12-01-2003, 01:23 AM

I've had my SR in and running great for about 3 weeks, then today it started acting up. When I'm not on the throttle the car seems to sputter almost. The car jumps. The throttle response is also very delayed now. I think it is an ignition problem and the car is just misfiring since after idleing for about an hour in my garage the car started to sputter and then after re started the headlights were very dim. My setup is as follows:

S13 SR20DET
KA24DE alternator
Relocated Battery
Aftermark ECU
KA24E MAFS

The last 4 are the 4 things that I think may be causing the problem if it is the ignition. I can't read RPM or speed yet since my gauges burnt out a week ago and I'm still waiting on new ones. The other things I think may be a cause are a bad ground in the rear and a weak battery. Thing is it starts just fine. It also appears to drive fine when I'm driving it hard. Anyone have similair problems? Any ideas on what it could be or any way for me to test wheter it's misfiring? Any info is appreciated. Thanks.

12-01-2003, 01:23 AM	#1
Negreac Zilvia Member Join Date: Dec 2002 Location: Detroit Age: 40 Posts: 199 Trader Rating: (0) Feedback Score: 0 reviews	Strange misfire problem??? I've had my SR in and running great for about 3 weeks, then today it started acting up. When I'm not on the throttle the car seems to sputter almost. The car jumps. The throttle response is also very delayed now. I think it is an ignition problem and the car is just misfiring since after idleing for about an hour in my garage the car started to sputter and then after re started the headlights were very dim. My setup is as follows: S13 SR20DET KA24DE alternator Relocated Battery Aftermark ECU KA24E MAFS The last 4 are the 4 things that I think may be causing the problem if it is the ignition. I can't read RPM or speed yet since my gauges burnt out a week ago and I'm still waiting on new ones. The other things I think may be a cause are a bad ground in the rear and a weak battery. Thing is it starts just fine. It also appears to drive fine when I'm driving it hard. Anyone have similair problems? Any ideas on what it could be or any way for me to test wheter it's misfiring? Any info is appreciated. Thanks. __________________ Don't pick fights with ugly people, they have nothing to lose...