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

jing · 07-29-2010, 12:49 AM

Car would suddenly die while driving, no bog. Sometimes it would start back up again, other times it wouldn't. When it does start up, sometimes it backfires then it dies, otherwise it just starts up then dies again couple seconds later. When this first started happening it would only happen after the car had warmed up so I figured it was fuel pump so I got a new Walbro and put that in.

All was dandy until today when it started doing it again, except it starts dying even before it's all warmed up. Got towed home and suspected possible clogged fuel filter? Took that off and tried blowing into it and there isn't much resistance at first but then it slowly becomes more difficult to blow into it suggesting that it's clogged. Picking up a new Z32 filter tmrw and putting that in and hopefully it solves the problem?

If not, what else could it be?

Recent work done:
Spark plugs
Fuel filter
Fuel pump
Nismo FPR
Splitfire coils

Slidin' Sam · 07-29-2010, 12:57 AM

Possibly the igniter? We used to have a s13 missile that had a slightly busted igniter on it, so the wires would come loose, and mid drift it would cut in/out and sometimes die. Just an idea, but try fuel filter first.

cpa s13 · 07-29-2010, 10:14 AM

Sounds like an electrical issue to me. You said splitfire coils were recently added. Did the issue exist prior to installing those?

Also might want to check relay/grounds for fuel pump.

Could also be an issue with injectors or an engine grounding problem.

Hope this helps.

Sileighty_85 · 07-29-2010, 10:45 AM

pull codes from ECU

Might be a bad CTS

jing · 07-29-2010, 11:11 PM

ECU code 21 - Ignition signal

Igniter? I tested it as per FSM and no faults tho.

Maybe the wiring? My igniter's not bolted on properly so it's just kinda flopping around near the exhaust manifold. Maybe all the heat's getting to it? Or maybe it's flopping around too much.. ?

s13silvia123 · 07-29-2010, 11:25 PM

if you have a cat check that it might be clogged if not then make sure nothing is in the exhaust system clogging it.

jing · 07-30-2010, 12:50 AM

I have no cat and don't think there's anything in the exhaust system.

Code 21 might be because I was screwing around with the igniter and unplugging it while running to see if I could try and replicate the problem I experienced while driving. I'll reset the car tomorrow and see if the code is cleared but now that I think of it the problem is prolly cuz the igniter's way too close to the exhaust manifold. Seeing as it has to cool down before it starts again that might be it! Now I'm hoping that the car will die while I'm driving it so I can swap in my spare igniter and see if it solves the issue

07-29-2010, 12:49 AM	#1
jing Zilvia Member Join Date: Dec 2007 Location: Vancouver, BC Age: 36 Posts: 291 Trader Rating: (4) Feedback Score: 4 reviews	SR fuel problem.. ? Car would suddenly die while driving, no bog. Sometimes it would start back up again, other times it wouldn't. When it does start up, sometimes it backfires then it dies, otherwise it just starts up then dies again couple seconds later. When this first started happening it would only happen after the car had warmed up so I figured it was fuel pump so I got a new Walbro and put that in. All was dandy until today when it started doing it again, except it starts dying even before it's all warmed up. Got towed home and suspected possible clogged fuel filter? Took that off and tried blowing into it and there isn't much resistance at first but then it slowly becomes more difficult to blow into it suggesting that it's clogged. Picking up a new Z32 filter tmrw and putting that in and hopefully it solves the problem? If not, what else could it be? Recent work done: Spark plugs Fuel filter Fuel pump Nismo FPR Splitfire coils

07-29-2010, 12:57 AM	#2
Slidin' Sam Zilvia Addict Join Date: Jul 2009 Location: Japan Posts: 729 Trader Rating: (9) Feedback Score: 9 reviews	Possibly the igniter? We used to have a s13 missile that had a slightly busted igniter on it, so the wires would come loose, and mid drift it would cut in/out and sometimes die. Just an idea, but try fuel filter first. __________________

07-29-2010, 10:45 AM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	pull codes from ECU Might be a bad CTS __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

07-29-2010, 11:25 PM	#6
s13silvia123 Post Whore! Join Date: May 2006 Location: where waldo is Age: 43 Posts: 3,267 Trader Rating: (16) Feedback Score: 16 reviews	if you have a cat check that it might be clogged if not then make sure nothing is in the exhaust system clogging it. __________________ 18g and 20g turbo users click on me http://zilvia.net/f/tech-talk/261219-18g-20g-turbo-users.html

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07-29-2010, 10:14 AM	#3
cpa s13 Join Date: Mar 2009 Location: Dallas, Ga Age: 35 Posts: 30 Trader Rating: (0) Feedback Score: 0 reviews	Sounds like an electrical issue to me. You said splitfire coils were recently added. Did the issue exist prior to installing those? Also might want to check relay/grounds for fuel pump. Could also be an issue with injectors or an engine grounding problem. Hope this helps.

07-29-2010, 11:11 PM	#5
jing Zilvia Member Join Date: Dec 2007 Location: Vancouver, BC Age: 36 Posts: 291 Trader Rating: (4) Feedback Score: 4 reviews	ECU code 21 - Ignition signal Igniter? I tested it as per FSM and no faults tho. Maybe the wiring? My igniter's not bolted on properly so it's just kinda flopping around near the exhaust manifold. Maybe all the heat's getting to it? Or maybe it's flopping around too much.. ?

07-30-2010, 12:50 AM	#7
jing Zilvia Member Join Date: Dec 2007 Location: Vancouver, BC Age: 36 Posts: 291 Trader Rating: (4) Feedback Score: 4 reviews	I have no cat and don't think there's anything in the exhaust system. Code 21 might be because I was screwing around with the igniter and unplugging it while running to see if I could try and replicate the problem I experienced while driving. I'll reset the car tomorrow and see if the code is cleared but now that I think of it the problem is prolly cuz the igniter's way too close to the exhaust manifold. Seeing as it has to cool down before it starts again that might be it! Now I'm hoping that the car will die while I'm driving it so I can swap in my spare igniter and see if it solves the issue