Misfiring Problem - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

KiLLeR2001 · 05-12-2008, 01:12 PM

Quote:

Originally Posted by whowutwut

You can easily find out which coil pack is bad by pulling them out one by one while the engine is idling. If there's no change in the idle, that one is the bad coil pack. I had two bad coil packs in my motor and the car was backfiring like crazy at WOT.

Well it would idle fine for the most part. I'm pretty sure all the coil packs work its just under load one of them can't keep up. If I were to unplug the coil packs one by one I'm almost sure there would be a change for each.

whowutwut · 05-12-2008, 01:57 PM

Quote:

Originally Posted by KiLLeR2001

Well it would idle fine for the most part. I'm pretty sure all the coil packs work its just under load one of them can't keep up. If I were to unplug the coil packs one by one I'm almost sure there would be a change for each.

You'd be surprised how well the engine "seems" to idle even on 3 cylinders, I thought mine was working totally fine. It was hovering around the right RPM going up and down very slightly... once the bad coil packs were replaced, it was idling rock steady.

just saying it would take less than 5 minutes to find the bad coil pack. or at least give it a try, could save you some money replacing 1 rather than all.

KiLLeR2001 · 05-12-2008, 05:19 PM

Quote:

Originally Posted by whowutwut

You'd be surprised how well the engine "seems" to idle even on 3 cylinders, I thought mine was working totally fine. It was hovering around the right RPM going up and down very slightly... once the bad coil packs were replaced, it was idling rock steady.

just saying it would take less than 5 minutes to find the bad coil pack. or at least give it a try, could save you some money replacing 1 rather than all.

Sounds convincing enough, right now I'm using my friends coil packs (his engine is currently down) when I buy my own I'll have to see which of mine are not functioning. Thanks for the reply.

whowutwut · 05-13-2008, 07:05 AM

Cool! good luck, you're lucky to have access to spare coil packs to try!

fladrifter · 05-13-2008, 07:45 AM

if its only one cylinder and you know wich one you could switch the coil packs to make sure its the packs

1989rps13 · 06-03-2008, 04:04 PM

what if your misfiring after u release the gas pedal at around 5k
also check coilpacks ?

05-13-2008, 07:05 AM	#34
whowutwut Leaky Injector Join Date: Oct 2003 Location: NY Posts: 85 Trader Rating: (0) Feedback Score: 0 reviews	Cool! good luck, you're lucky to have access to spare coil packs to try!

05-13-2008, 07:45 AM	#35
fladrifter Join Date: Aug 2007 Location: miami Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	if its only one cylinder and you know wich one you could switch the coil packs to make sure its the packs

06-03-2008, 04:04 PM	#36
1989rps13 BANNED Join Date: Sep 2007 Location: socal Posts: 1,499 Trader Rating: (10) Feedback Score: 10 reviews	what if your misfiring after u release the gas pedal at around 5k also check coilpacks ?