Studdering problem.PLEASE HELP! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

playastarkz123 · 02-13-2009, 06:30 PM

OK so i have had this problem for along while and im just sick and tired of it. I have an s13 sr20det, the problem is that when start the car its idles fine at about 1k but it sounds like its a wrx (studdering) it sounds like this when i drive too, all the time.

I did a test to see if it was my injectors one by one and taking notice of any changes in idle. Cylinder one had no change. so i replaced it ...same problem.

i have also changed the plugs, fuel filter (z32), checked grounds, vac, and boost leaks.

I dont loose boost but or idle low, jus this stupid studdering sound. Some times i get a more lean than normal afr reading from wideband also.

any ideas?

wrxn240 · 02-13-2009, 06:47 PM

coil? this happened to my friends 240 and the problem was fixed when he replaced his coil.

esqueue · 02-13-2009, 08:22 PM

Try swapping the coil of the one that made no difference to another and then unplug the injectors to see if there is a change. A change is a good thing as you will know it is a bad coil.

playastarkz123 · 02-13-2009, 09:12 PM

i got this same suggestion from my brother..ill try it the morning

02-13-2009, 06:30 PM	#1
playastarkz123 Zilvia Junkie Join Date: Apr 2007 Location: New Jersey Age: 35 Posts: 328 Trader Rating: (8) Feedback Score: 8 reviews	Studdering problem.PLEASE HELP! OK so i have had this problem for along while and im just sick and tired of it. I have an s13 sr20det, the problem is that when start the car its idles fine at about 1k but it sounds like its a wrx (studdering) it sounds like this when i drive too, all the time. I did a test to see if it was my injectors one by one and taking notice of any changes in idle. Cylinder one had no change. so i replaced it ...same problem. i have also changed the plugs, fuel filter (z32), checked grounds, vac, and boost leaks. I dont loose boost but or idle low, jus this stupid studdering sound. Some times i get a more lean than normal afr reading from wideband also. any ideas? __________________ www.teamirrational.wordpress.com

02-13-2009, 09:12 PM	#4
playastarkz123 Zilvia Junkie Join Date: Apr 2007 Location: New Jersey Age: 35 Posts: 328 Trader Rating: (8) Feedback Score: 8 reviews	i got this same suggestion from my brother..ill try it the morning __________________ www.teamirrational.wordpress.com

02-13-2009, 06:47 PM	#2
wrxn240 Leaky Injector Join Date: Aug 2008 Location: Sherman Oaks Posts: 103 Trader Rating: (0) Feedback Score: 0 reviews	coil? this happened to my friends 240 and the problem was fixed when he replaced his coil.

02-13-2009, 08:22 PM	#3
esqueue Leaky Injector Join Date: Jan 2009 Location: Long Beach, CA Age: 43 Posts: 53 Trader Rating: (1) Feedback Score: 1 reviews	Try swapping the coil of the one that made no difference to another and then unplug the injectors to see if there is a change. A change is a good thing as you will know it is a bad coil.