wierd injector probs and other fun stuff - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Ztrix · 03-04-2013, 03:11 PM

i have a 93 240sx i picked up recently. i did an upper gasket set and removed emissions ect. anyways, i had some issues with my injector orings for awhile. Got that fixed for the most part. now while idiling my #1 cyclinder isn't firing. has spark. now for the wierd part, i unplug the injector and it seems to start hitting. manifold temp on the 1st cyclinder goes from 175ish to 300+. i replaced the injector and it was hitting perfectly. now i go to start it today and its missing again, same prob. any ideas? ive never seen anything like this lol.
im only getting one code,34- knock sensor... when i was pulling the intake mani and looked at the knock sensor it only had one black wire going to it. just curious if theres supposed to be another wire or not.
im having Alot of fun diagnosing this one so if anyone has any opinions or ideas, im open to anything here lol.

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03-04-2013, 03:11 PM	#1
Ztrix Join Date: Mar 2013 Location: Kingston, Tn Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	wierd injector probs and other fun stuff i have a 93 240sx i picked up recently. i did an upper gasket set and removed emissions ect. anyways, i had some issues with my injector orings for awhile. Got that fixed for the most part. now while idiling my #1 cyclinder isn't firing. has spark. now for the wierd part, i unplug the injector and it seems to start hitting. manifold temp on the 1st cyclinder goes from 175ish to 300+. i replaced the injector and it was hitting perfectly. now i go to start it today and its missing again, same prob. any ideas? ive never seen anything like this lol. im only getting one code,34- knock sensor... when i was pulling the intake mani and looked at the knock sensor it only had one black wire going to it. just curious if theres supposed to be another wire or not. im having Alot of fun diagnosing this one so if anyone has any opinions or ideas, im open to anything here lol.