Sr20 injectors stuck open - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

coupesallday! · 08-27-2014, 10:34 AM

Ok guys I need help, I'm having a very similar problem to this guy here: http://forums.nicoclub.com/injector-...p-t317319.html

And I'm not sure what the problem is. I took off the fuel rail and turned the car to the "on" position and gas is shooting out of injector #1 and #4.
My motor is a stock redtop sr20det just completely rebuilt and hasn't ran yet.
Any help is appreciated. I did search but most threads yielded no results.

Driftwire · 08-27-2014, 12:38 PM

check o rings

OnTheChip · 08-27-2014, 01:38 PM

If the same thing happens with the injectors unplugged, it's probably leaking around the O-rings. If it only happens when the injectors are plugged in, check the wiring from the injectors to the ECU. If they are shorted to ground, the injectors will stay open all the time.

coupesallday! · 08-27-2014, 01:43 PM

Quote:

Originally Posted by OnTheChip

If the same thing happens with the injectors unplugged, it's probably leaking around the O-rings. If it only happens when the injectors are plugged in, check the wiring from the injectors to the ECU. If they are shorted to ground, the injectors will stay open all the time.

Hey man thanks, I'm going to try that now

coupesallday! · 08-27-2014, 01:57 PM

It does it when the plugs are unplugged so I'm going to plug them in and see. Also nothing was coming out of #2 and #3

wawazat8402 · 08-27-2014, 05:06 PM

Like the others said, check the orings. Do NOT replace with rubber orings, they need to be viton or something fuel safe. OEMs use viton.

*anti tyler* · 08-27-2014, 05:36 PM

Just to piggy back on most of the replies, MAKE SURE, your O-rings aren't pinched to the point where they're either broken or separated.

coupesallday! · 08-27-2014, 09:01 PM

Two injectors were bad but I have a feeling it's not the o rings it might be the connection from the ecu.

08-27-2014, 01:38 PM	#3
OnTheChip Zilvia Junkie Join Date: May 2013 Location: Burgaw, NC Posts: 317 Trader Rating: (0) Feedback Score: 0 reviews	If the same thing happens with the injectors unplugged, it's probably leaking around the O-rings. If it only happens when the injectors are plugged in, check the wiring from the injectors to the ECU. If they are shorted to ground, the injectors will stay open all the time. __________________ NismotronicSA - Speed-Density Tuning for Nissans

08-27-2014, 05:06 PM	#6
wawazat8402 Zilvia Member Join Date: Jan 2005 Location: OKC, OK Age: 40 Posts: 183 Trader Rating: (14) Feedback Score: 14 reviews	Like the others said, check the orings. Do NOT replace with rubber orings, they need to be viton or something fuel safe. OEMs use viton.