Engine Missfire - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

TUBE · 12-23-2008, 07:20 PM

So i have a little problem that hopefully someone can help me figure out. Basically the engine misfires at low rpm and only after it has heated up a bit, (does not happen for the first 5 min or so of driving). Ive replaced the plugs, wires, cap, rotor and MAF and I'm now out of ideas. Any help would be much appreciated!

S-Nation S13 · 12-23-2008, 07:24 PM

have you looked at your injectors,or have ever checked to see if you have a spark?? youve changed all i can think off but whats the use of changin them even though there new they can be faulty you never know pm me if you need more info seems odd for this to be happenin o one more thing you sure your gettin a signal from the ecu on your injector harness

TUBE · 12-23-2008, 07:53 PM

Yeah I'm definitely getting spark. Ill check out the injectors and harness tomorrow. Strangest part is how it only misfires after the engine has warmed up and not all the time. Feels like its gona die on my when I take off from a dead stop or mash the gas. Thanks for the suggestions!

S-Nation S13 · 12-23-2008, 08:01 PM

no problem just doing what others have done for me in my time of need my 240 always give me troubles when i least expect it but so far been runnin like a champ!!

so its temp related..ive heard and seen 240's actin funny after car has warmed up there problem was faulty cts (coolant temp sensor)!! you can try that seein that you said during cold condition your car runs fine

12-23-2008, 07:20 PM	#1
TUBE Join Date: Apr 2006 Location: San Jose Age: 22 Posts: 19 Trader Rating: (0)	Engine Missfire So i have a little problem that hopefully someone can help me figure out. Basically the engine misfires at low rpm and only after it has heated up a bit, (does not happen for the first 5 min or so of driving). Ive replaced the plugs, wires, cap, rotor and MAF and I'm now out of ideas. Any help would be much appreciated!

12-23-2008, 07:24 PM	#2
S-Nation S13 Zilvia Junkie Join Date: Jan 2008 Location: 760 Oside representin' Age: 23 Posts: 427 Trader Rating: (2)	have you looked at your injectors,or have ever checked to see if you have a spark?? youve changed all i can think off but whats the use of changin them even though there new they can be faulty you never know pm me if you need more info seems odd for this to be happenin o one more thing you sure your gettin a signal from the ecu on your injector harness __________________ jspecs13.blogspot.com

12-23-2008, 08:01 PM	#4
S-Nation S13 Zilvia Junkie Join Date: Jan 2008 Location: 760 Oside representin' Age: 23 Posts: 427 Trader Rating: (2)	no problem just doing what others have done for me in my time of need my 240 always give me troubles when i least expect it but so far been runnin like a champ!! so its temp related..ive heard and seen 240's actin funny after car has warmed up there problem was faulty cts (coolant temp sensor)!! you can try that seein that you said during cold condition your car runs fine __________________ jspecs13.blogspot.com

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12-23-2008, 07:53 PM	#3
TUBE Join Date: Apr 2006 Location: San Jose Age: 22 Posts: 19 Trader Rating: (0)	Yeah I'm definitely getting spark. Ill check out the injectors and harness tomorrow. Strangest part is how it only misfires after the engine has warmed up and not all the time. Feels like its gona die on my when I take off from a dead stop or mash the gas. Thanks for the suggestions!

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