Random misfiring, need input/help. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*HaLo* · 08-01-2003, 06:29 PM

Hey guys!

I've got a problem. My SR randomly misfires at boost over 9 psi. It gets worse when boostin' more. My idle is a tiny bit erratic too. I am currently running a retuned ecu for 550cc and Z32 mafs.

I have changed the plugs twice, gapping them differently. I have also changed the fuel filter and cleaned up the air filter. I'm getting good fuel pressure.

Now I never had this problem for 5000km or so. It's been a major pain in the last 800km. I suspect the coilpacks or the ignitor chip. How can you check these?

Any other idea what's wrong with the car.

08-01-2003, 06:29 PM	#1
HaLo from Canada, eh! Join Date: Sep 2001 Location: Montreal, Quebec Age: 46 Posts: 5,201 Trader Rating: (0) Rides Gallery: HaLo Feedback Score: 0 reviews	Random misfiring, need input/help. Hey guys! I've got a problem. My SR randomly misfires at boost over 9 psi. It gets worse when boostin' more. My idle is a tiny bit erratic too. I am currently running a retuned ecu for 550cc and Z32 mafs. I have changed the plugs twice, gapping them differently. I have also changed the fuel filter and cleaned up the air filter. I'm getting good fuel pressure. Now I never had this problem for 5000km or so. It's been a major pain in the last 800km. I suspect the coilpacks or the ignitor chip. How can you check these? Any other idea what's wrong with the car. __________________ -> HaLo Race Car: '98 E36 BMW M3 Daily Drivers: '23 Audi Q4 e-tron & '13 VW Touareg SOLD: 01 GPW Honda S2000 PARTED: 93 Pearl White 240SX LE Fastback w/SR20DET SOLD: 93 Super White 240SX SE Convertible w/Silvia Front

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