Injector sprays constantly - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SRpetey · 01-09-2011, 05:05 PM

When i turn the ingnition to ON the #2 injector in my SR20det sprays the fuel constantly and floods the cylinder. if i unplug it doesnt happen. Does this mean my ECU is bad and is always sending a signal to injector #2

anton1o · 01-09-2011, 06:11 PM

I wouldnt jump to that conclusion but have you tried any form of trouble shooting?

Moving the injector to a different spot for instance?

importdude · 01-09-2011, 06:17 PM

injector is stuck open
replace

ecu only primes rail no fuel should come out of injectors until u crank/start

SRpetey · 01-09-2011, 08:22 PM

Quote:

Originally Posted by anton1o

I wouldnt jump to that conclusion but have you tried any form of trouble shooting?

Moving the injector to a different spot for instance?

Quote:

Originally Posted by importdude

injector is stuck open
replace

ecu only primes rail no fuel should come out of injectors until u crank/start

okey i did some trouble shooting. I swaped injectors from another cylinder and same problem. So the injectors are fine. The wiring is okey too.

The yellow/black wire that signals the #2 injector is being grounded at all times by the ECU. Even when the ignition is on off. I even used the plug from injector two and plug it to #3(the car was off n the rail was off) and it does the same thing.

Does this mean that i have to replace my ECU or is there a Fix for this problem

importdude · 01-09-2011, 10:01 PM

test it
fsm

240sxrb25 · 01-09-2011, 10:03 PM

you have some sort of fueling issue

SRpetey · 01-10-2011, 12:45 PM

No its the ECU

jspaeth · 01-10-2011, 01:22 PM

Check the ground signal wire from that injector clip for continuity with the chassis to see if the wire itself is grounding out on the chassis. If not, then something internal to the ECU is causing the problem most likely....

nismoman · 01-10-2011, 02:20 PM

What he said ^^^ don't throw away the ecu just yet!

SRpetey · 01-10-2011, 04:20 PM

Quote:

Originally Posted by jspaeth

Check the ground signal wire from that injector clip for continuity with the chassis to see if the wire itself is grounding out on the chassis. If not, then something internal to the ECU is causing the problem most likely....

Quote:

Originally Posted by nismoman

What he said ^^^ don't throw away the ecu just yet!

Yeah thats what I did. I unplugged the ecu hardness and the injector at the plug. Then I checked the injector plug and its not grounded. It's only grounded when I plug back the ecu.

01-09-2011, 05:05 PM	#1
SRpetey Zilvia Junkie Join Date: May 2006 Location: OC Posts: 408 Trader Rating: (13) Feedback Score: 13 reviews	Injector sprays constantly When i turn the ingnition to ON the #2 injector in my SR20det sprays the fuel constantly and floods the cylinder. if i unplug it doesnt happen. Does this mean my ECU is bad and is always sending a signal to injector #2

01-09-2011, 10:01 PM	#5
importdude Zilvia FREAK! Join Date: Nov 2006 Location: san j0 Posts: 1,391 Trader Rating: (19) Feedback Score: 19 reviews	test it fsm __________________ built ka-t

01-10-2011, 01:22 PM	#8
jspaeth Nissanaholic! Join Date: Mar 2006 Location: Philadelphia suburbs Age: 40 Posts: 2,347 Trader Rating: (7) Rides Gallery: jspaeth Feedback Score: 7 reviews	Check the ground signal wire from that injector clip for continuity with the chassis to see if the wire itself is grounding out on the chassis. If not, then something internal to the ECU is causing the problem most likely.... __________________ Daily driven

01-10-2011, 02:20 PM	#9
nismoman Zilvia Junkie Join Date: Jul 2005 Location: Bowie, MD Posts: 412 Trader Rating: (0) Feedback Score: 0 reviews	What he said ^^^ don't throw away the ecu just yet! __________________

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01-09-2011, 06:11 PM	#2
anton1o Zilvia Junkie Join Date: Jul 2008 Location: Melbourne, Australia Age: 39 Posts: 333 Trader Rating: (0) Feedback Score: 0 reviews	I wouldnt jump to that conclusion but have you tried any form of trouble shooting? Moving the injector to a different spot for instance? __________________

01-09-2011, 06:17 PM	#3
importdude Zilvia FREAK! Join Date: Nov 2006 Location: san j0 Posts: 1,391 Trader Rating: (19) Feedback Score: 19 reviews	injector is stuck open replace ecu only primes rail no fuel should come out of injectors until u crank/start __________________ built ka-t

01-09-2011, 10:03 PM	#6
240sxrb25 Zilvia Junkie Join Date: Aug 2006 Location: omaha, ne Age: 35 Posts: 451 Trader Rating: (2) Feedback Score: 2 reviews	you have some sort of fueling issue

01-10-2011, 12:45 PM	#7
SRpetey Zilvia Junkie Join Date: May 2006 Location: OC Posts: 408 Trader Rating: (13) Feedback Score: 13 reviews	No its the ECU