Black soot above exhaust - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

gschroeder78 · 06-26-2002, 09:35 AM

Hey guys,
I've got the N1 Dual on my '89 240sx and since then, I've been getting this black soot deposit all over the back of my car. I'm sure this is burnt fuel so how can I stop my car from running so rich? It seems to backfire moderatly, I've changed the spark plugs, O2 sensor, fuel filter and oil. No luck. Can someone please tell me how to fix this? I can't paint it until I stop this from happening.

Thanks

06-26-2002, 09:35 AM	#1
gschroeder78 Zilvia Junkie Join Date: Nov 2001 Location: Westminster, CO Age: 46 Posts: 507 Trader Rating: (0) Feedback Score: 0 reviews	Hey guys, I've got the N1 Dual on my '89 240sx and since then, I've been getting this black soot deposit all over the back of my car. I'm sure this is burnt fuel so how can I stop my car from running so rich? It seems to backfire moderatly, I've changed the spark plugs, O2 sensor, fuel filter and oil. No luck. Can someone please tell me how to fix this? I can't paint it until I stop this from happening. Thanks __________________ 1989 240SX Coupe -Eibach Prokit Springs -KYB AGX Struts -Apex-i N1 Dual Exhaust Westminster, CO