need help. everyone stumped! injectors not priming? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sil80forme · 10-20-2007, 10:01 PM

so my problem is that during initial startup the injectors dont prime to start... but if i turn ignition to the on position and take a test light and ground each injector its starts up fine and stays runnin with no problems. i thought it might be an ecu prob but i swapped ecu's and it still does not work. i check all visible grounds and everything looks like it is hooked up correctly. i am using r/c engineering injectors which was stated when i purchased that they were high inpedence so i dont need resisters but if i was told incorrectly what would happen if the injectors were low inpedence.. thanx oh yeah this is a ka

MURPHY · 10-20-2007, 10:06 PM

your ecu is bad. if you have to MANUALLY ground them out most likely your ecu is bad. the ecu should give them ground to feed

sil80forme · 10-20-2007, 10:07 PM

already put a new one in and that didnt solve the prob. its something else

rps13drift · 10-20-2007, 10:50 PM

If your injectors were indeed low impedence your ecu will eventualy burn out due to it over basicaly over working itself

sil80forme · 10-22-2007, 03:10 PM

how can i tell if the injectors are low inpedence

MegasquirtCA · 10-22-2007, 03:34 PM

use a multimeter and set it to OHLMS its a omega sign. If its low impedance resistance is usually 4ohms and under. High Imp is usually 10ohms and up

sil80forme · 10-24-2007, 06:20 AM

could my wires on the injector harness where they were spiced in be backwards?

sil80forme · 11-06-2007, 10:45 PM

well the injectors are 12.4 ohms so they are def high inpedence... anyone else have any other ideas of what it could be.

10-20-2007, 10:01 PM	#1
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	need help. everyone stumped! injectors not priming? so my problem is that during initial startup the injectors dont prime to start... but if i turn ignition to the on position and take a test light and ground each injector its starts up fine and stays runnin with no problems. i thought it might be an ecu prob but i swapped ecu's and it still does not work. i check all visible grounds and everything looks like it is hooked up correctly. i am using r/c engineering injectors which was stated when i purchased that they were high inpedence so i dont need resisters but if i was told incorrectly what would happen if the injectors were low inpedence.. thanx oh yeah this is a ka

10-20-2007, 10:50 PM	#4
rps13drift Zilvia FREAK! Join Date: Oct 2006 Location: NJ BRO!!!! Age: 39 Posts: 1,194 Trader Rating: (6) Rides Gallery: rps13drift Feedback Score: 6 reviews	If your injectors were indeed low impedence your ecu will eventualy burn out due to it over basicaly over working itself __________________ http://allies-drift.blogspot.com/

10-20-2007, 10:06 PM	#2
MURPHY Nissanaholic! Join Date: Jan 2006 Location: fredericksburg, va Age: 35 Posts: 1,693 Trader Rating: (1) Feedback Score: 1 reviews	your ecu is bad. if you have to MANUALLY ground them out most likely your ecu is bad. the ecu should give them ground to feed

10-20-2007, 10:07 PM	#3
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	already put a new one in and that didnt solve the prob. its something else

10-22-2007, 03:10 PM	#5
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	how can i tell if the injectors are low inpedence

10-22-2007, 03:34 PM	#6
MegasquirtCA Zilvia Addict Join Date: May 2006 Location: South Florida Posts: 610 Trader Rating: (3) Feedback Score: 3 reviews	use a multimeter and set it to OHLMS its a omega sign. If its low impedance resistance is usually 4ohms and under. High Imp is usually 10ohms and up

10-24-2007, 06:20 AM	#7
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	could my wires on the injector harness where they were spiced in be backwards?

11-06-2007, 10:45 PM	#8
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	well the injectors are 12.4 ohms so they are def high inpedence... anyone else have any other ideas of what it could be.