93 integra ls. the injectors are from 95 integ auto ls. car was runnning fine then for about it week it was puttering i guess you can say. then one day i filled it up at the gas station and then it stalled. the fuel rail fills with fuel but the injectors do not spray. none of them. so its either the injectors or what ever makes the injectors spray. does anyone have any idea? thank you in advance

 

try changing your injectors back and see if it does the same thing....let us know

 

those are the only injectors i got

 

can you hear the fuel pump prime up when you turn the key forward?

 

well i am not sure, the fuel rail fills with fuel when the car is set to on

 

okay well obviously then it is an injector problem.
What doesnt make sense is that they are all non functional.
Usually injectors go one at a time.
Maybe there is something wrong with the injector rail?
Anyone else have ideas?

 

the rail was out of the intake manifold. injectors were still plugged into the rail. the key was set to on. none of them sprayed. weird!

 

I think u answered your own question.
PS sorry to take you around in a circle its just i believe in troubleshooting from the ground up.

 

I dont get it, if you pulled the fuel rail off of the intake manifold, and then turned the key to run, the fuel pressure should have been enough to pop the injectors out of the rail. So, first thing id do is make sure your fuel pump is working, cuz I seriously doubt you had 4 injectors go bad at once. But, if your fuel pump really is ok, theres gotta be something else to go on, a CEL or something else you did.

 

there was pressure because, when i pulled a injector out of the rail and i heard air release. so i know there was pressure in the rail. there is no cel, but then again the car was not started. im pretty sure the fuel pump is ok

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by allmotor.net &raquo;</TD></TR><TR><TD CLASS="quote">there was pressure because, when i pulled a injector out of the rail and i heard air release. </TD></TR></TABLE>

"Air" release? Is that supposed to happen?

 

 

like when you open a pepsi bottle. you hear air release. it wasnt that loud, but i heard it.

 

Look dude, that doesnt mean that youve got fuel pressure. Get a gauge, and do it right, then come ask for more help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by allmotor.net &raquo;</TD></TR><TR><TD CLASS="quote">there was pressure because, when i pulled a injector out of the rail and i heard air release. so i know there was pressure in the rail. there is no cel, but then again the car was not started. im pretty sure the fuel pump is ok</TD></TR></TABLE>When you pulled the injector out of the rail, there should have been gasoline coming out, not air.

Holding the rail with injectors, turning the key 'on' it shouldn't spray. The ECM isn't trying to fire the injectors until the engine is cranking.

Get your DMM & troubleshoot the circuit for the injectors. One side of each injector plug should have +12v constant supply from the main relay (when the ignition switch is on). The other side of each injector plug goes to the ECM; the ECM closes that side of the circuit to ground when it wants the injector to fire.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by allmotor.net &raquo;</TD></TR><TR><TD CLASS="quote">there was pressure because, when i pulled a injector out of the rail and i heard air release. so i know there was pressure in the rail. there is no cel, but then again the car was not started. im pretty sure the fuel pump is ok</TD></TR></TABLE>

Thats line pressure left over from the last time the car was running.
Back to basics. Turn the key forward and see if you can hear the fuel pump prime.
Check your fuel filter (in tank) and replace.

 

I'm bringing this thread back cuz I am having the same problem
I changed fuel filter, pump is working just fine. I have 40+psi of pressure in the rail. Its obviously an electrical issue, Where do I start?

BTW: car was running just fine, all of a sudden a loud backfire, car stutters then shuts off. I pull over, pop the hood to look for anything obvious, notice the motor is overheated, water boiling in reserve tank. I sit for a bit, let is cool down, try to fire it up, no luck. Car cranks, motor turns. I have spark, just no fuel. Car never overheated before. Are these problems related?

TIA

 

It possibly may be a main relay problem. I would try replacing it and see what happens. try cycling the key and see if it finally hits or not. if if eventually hits..... it is probably that. Also check timing. if it backfired...it could have possibly jumped time.....dosen't happen often with hondas..but it can

 

Since you get 40 psi in the fuel rail, your main relay must be turning on the fuel pump. If you ALSO get the bulb-check for the check-engine-light when you turn on the key, then the main relay must be turning on the ECU. Let us know whether that's the case.

Overheating can cause or be cause by a bunch of things, mostly not related to what this thread's about. Check if you have spark & fuel, meaning the injectors are actually firing. Then post up a new thread, because it doesn't really sound like the same problem.

ps... allmotor.net, did you ever get this figured out??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">Since you get 40 psi in the fuel rail, your main relay must be turning on the fuel pump.
</TD></TR></TABLE>

Doing some research and came across this "With bad relay you will lose power to the injectors and the fuel pump but you may not lose fuel pressure because the injectors can't open without power. When the main relay goes bad and there isn't any voltage at the injectors, it will set a code 16 for an injector because the computer doesn't read voltage on the groundside of the injector."

I hope its as easy as that.
I'm gonna replace relay after work, I'll post results

Thanx guyz