No fuel injector pulse

[EdwinNkfc]

1995 acura integra ls sawp to gsr engine on it

Long story about my car.
my car is wont start only cranking. I find out no injector pulse. I check the main relay that have the click sound when you turn the key on. the fuel pump is work. the ecu is work as well (i plug it into other car). What kind of thing do i need to check? Also, Will the distributor control the fuel injector?

thanks

 

[96LSteg]

distributor definitely distributes ignition spark to each cylinder. has nothing to do with fuel :lol:

My question is how did you make the determination that you have not injector pulse?

Check to make sure you arent missing the "extra fuse" in the fuse box under the hood. It actually controls the injectors if im not mistaken. This is why we are told to remove it when doing a compression test so that fuel isnt dumped into the cylinder.

Also you can unhook the fuel line from the filter (under the hood) and see if you are even getting fuel that far up. Then report back

 

[Muckman]

With the ignition switch ON you should have 12v at one of the injector pins. The other injector pin is ground that is switched off at the Ecu. You can use a multimeter to trace this ground wire back to the Ecu to make sure its connected and then to confirm its the correct pin. You can google the pinout of your Ecu to double check the injector pins.

Obviously if you had a problem with a fuse or the main relay you wouldnt have 12v at the injector.

 

[96LSteg]

^^^What he said

 

[Nick_C78]

distributor definitely distributes ignition spark to each cylinder. has nothing to do with fuel :lol:

This is why we are told to remove it when doing a compression test so that fuel isnt dumped into the cylinder.

Mmm not quite. Unplugging the dizzy will actually disable the injectors. That's actually how I've done compression tests. So it kind of has something to do with injectors. After all the ecu needs to sync both together, so obviously they are tied somewhere.

 

[96LSteg]

Mmm not quite. Unplugging the dizzy will actually disable the injectors. That's actually how I've done compression tests. So it kind of has something to do with injectors. After all the ecu needs to sync both together, so obviously they are tied somewhere.

touche Nicholas

 

[Muckman]

why would the disable the injectors? Thats not part of the circuit.

 

[Nick_C78]

Pretty sure injectors won't spray without the pulse signal from the dizzy. At least that's what has always been my understanding. . Haha I have been wrong before.

 

[mustrun]

test injectors with these free rentals from Autozone

http://www.autozone.com/autozone/accessories/OEM-6-pcs-noid-light-set/_/N-255s?itemIdentifier=948078

 

[EdwinNkfc]

distributor definitely distributes ignition spark to each cylinder. has nothing to do with fuel :lol:

My question is how did you make the determination that you have not injector pulse?

Check to make sure you arent missing the "extra fuse" in the fuse box under the hood. It actually controls the injectors if im not mistaken. This is why we are told to remove it when doing a compression test so that fuel isnt dumped into the cylinder.

Also you can unhook the fuel line from the filter (under the hood) and see if you are even getting fuel that far up. Then report back

Actually. i took my car to the shop, they test it for me. they said no fuel injector pulse. Also, I did test by myself. i find out, the fuel injector didnt spark any fuel at all. ANd i take the injector out and test it, It spark fuel. I use some diy method to test it..

One of the guys that i meet, he told me that might be a distributor problem that i kind of confusing about what going on on my car.

 

[Aussie]

why would the disable the injectors? Thats not part of the circuit.

Pretty sure it's part of the fuel cut/knock sensor/safety system. All that shit is connected and sorts out at the ecu.

OP one of your sensors must be holding you back, or you have a short in the wires. Check each one from the distributor for continuity back to the ecu.

 

[Nick_C78]

It's so your car doesn't food itself. That's why it won't spray if it doesn't get the signal from dizzy.

Do you know anyone with a dizzy you can swap and test with edwin?

 

[EdwinNkfc]

Pretty sure it's part of the fuel cut/knock sensor/safety system. All that s*** is connected and sorts out at the ecu.

OP one of your sensors must be holding you back, or you have a short in the wires. Check each one from the distributor for continuity back to the ecu.

Did you know how to test those sensors? Actually i am confusing about the continuity.. what is that mean?

 

[DonJulio]

1. Is it a real gsr swap? As it does it have the vtec dizzy, ecu and all the sensors/solenoids?

2. Did you do the wiring or did someone else?

 

[Muckman]

Right. Without the Ecu sensing the engine rotation (via distributor) it wont fire the injectors.

I just pull the PGM-FI fuse in the engine bay fuse box.