About ready for hammer action (HELP)

[tooez]

Yes battery was out. I bought a new one. :L

 

[Paul Higg]

Well, if you disconnected things with the battery connected chances are you fried a fuse or link especially when you consider it was running before. No DTC's is a good sign too.

Keep after those fuses.

Did you remove the ECM? Check it's connectors too. Look for any corrosion.

 

[topless82vette]

toez is your security light on while cranking? I've seen vats systems that crank but do not allow the injectors to spray.

 

[Paul Higg]

I also thought of another thing while I am getting dinner ready. Are you trying to watch the injectors spray while they are OUT? I do not know if they use the engine as a ground or not but if they do then they will not work that way. Just a wild guess.

 

[tooez]

I read some things about the injectors. I did all of this. No fuel.

The injectors can be tested by installing a 'noid light', (headlamp bulb may work) into the injector electrical connector, which confirms voltage when the light flashes.

1. Start the engine and listen to each fuel injector individually for a 'clicking' sound.
2. Turn the engine off and disconnect the electrical connector from the injector(s) that did not have a 'clicking' sound.
3. Check the injector for continuity across the terminals. Compare the resistance value to a known good injector. The readings should be similar, if so proceed to the next step. If readings differ greatly, replace the injector.

Fig. 6: Fuel injector testers can be purchased or sometimes rented
Fig. 7: A noid light can be attached to the fuel injector harness in order to test for injector pulse

1. Check between each injector terminal and ground. If continuity exists, replace the injector.
2. Disconnect the fuel injector connector and connect a noid light to the wiring harness connector. Crank the engine, while watching the light. Perform this test on at least two injectors before proceeding. If the light does not flash, check the injector power supply and ground control circuitry. If the light flashes proceed to the next step.
3. If the light flashes, remove the fuel rail from the engine and following the procedure below check the injector operation:
   1. Using mechanic's wire, secure the injector to the fuel rail.
   2. Place a clear plastic container around each injector.

CAUTION
Prior to performing this test, all fuel safety precautions must be followed. Make certain the container is approved to handle fuel and is securely positioned around the injector. Do NOT use a glass container. Glass containers can be easily damaged, resulting in a serious fire hazard.

1. With the help of an assistant or using a remote starter button, crank the engine for 15 seconds while observing the injector operation. The injector should produce a cone shaped spray pattern and all containers should retain equal amounts of fuel.
2. Once the cranking test is complete leave the fuel rail pressurized and observe the injectors for leakage.

1. Replace any injector which is leaking or fails to provide a cone shaped spray pattern when energized.

 

[topless82vette]

I also thought of another thing while I am getting dinner ready. Are you trying to watch the injectors spray while they are OUT? I do not know if they use the engine as a ground or not but if they do then they will not work that way. Just a wild guess.

the ecm grounds them. if they grounded from contacting the intake they would open when they weren't supposed to.

tpi is batch fire so you only need to use your noid light on one injector plug from each back to see if all of them have power and a ground signal from ecm.

 

[Paul Higg]

Well, did you get the light to come one? Excellent article by the way. I used to use these same troubleshooting lights on jets. We used to call them load lamps.

If you didn't get any fuel then the light must not have come on right? Then that would still mean an electrical problem.

I would love to know.

Paul

 

[tooez]

No that's the problem. Light comes on. Both sides are working. I just checked about 14 fusable link.

Now a list that has been done and what I have done.

Check all fusable links that I could find including the 9 behind the battery.
Put new fuel pump on.
Put new fuel pump strainer on.
Put new a short hose on the fuel pump on took the Fuel Pump Pulsator off.
Put new fuel filter on.
Put new fuel regulator on.
Ohmed injectors. All good.
Used a low voltage light to check pulse to injectors. (Lights lites and palsates.)
Pulled the fuel rail and checked to see if injectors sprayed. (NOPE)
Put new fuses in fuel pump fuse.
put new fuses for the injectors.
Check for fuel pressure. (45lbs)


Checked the tool box for the Sledge hammer. Just make sure it was ready for some action. LOL

 

[tooez]

WILL WORK FOR CAR TO BE FIXED> LOL

 

[hotshotzny]

Have you ever wanted to take a hammer and just start smashing windows and plenum and runners.


sold my last truck with the perfect imprint of my fist right behind the drivers side door...... just to remind me every day i should have stuck with those anger management classes my boss made me take

 

[topless82vette]

well if the noid light flashes then the injectors will pulse and you should get fuel.

check the crk fuse. I think if the ecm doesnt see a pulse signal from the ignition module the injectors wont fire either.

 

[Paul Higg]

Well tooez, as I said, I live in Atlanta, a flatbed shouldn't cost me too much to take it off your hands!


So, if the light comes on you have power, power goes to the injectors. In my humble opinion as a former aircraft mechanic with 30 years of avionics electrical troubleshooting (I am NOT patting myself on the back):eyerole I would HAVE to say that you must have 8 bad injectors. I know the odds of that are zillions to one but that may be the case. But...I doubt it. What I would do is see if you could find a known GOOD injector from someone and swap it in and see what happens. That way you'll know for sure.

Now, that noid light might indicate you have VOLTAGE but not CURRENT. You could have very GOOD voltage but if there is a slight short to ground OR a bad ground you may not be pulling good current. Does that noid light just check voltage or does it also check current because if it doesn't you will HAVE to check current or the grounds.

You can still have the light come on but it might not have enough power to operate the injectors. THAT would be my next step. I THINK but I am not sure on your year that it the injectors get their grounds from the ECM. But it the ECM has a bad ground that could be it. MY guess is you do not have enough CURRENT, POWER, OOMPH as it were to operate those injectors.

PLEASE keep us informed because I am keeping a file on this for my own selfish reasons--I like to have other's knowledge. It helps sometimes ya know?

 

[Paul Higg]

Topless, what is the crk fuse? What does crk stand for if anything?

 

[topless82vette]

I would check all you ecm to engine block grounds. I think when you put it back together you missed something.

 

[gmjunkie]

WILL WORK FOR CAR TO BE FIXED> LOL

Have Truck,Will Travel!! I don't know where you are Tennessee,But I Gonorrhea I can fix that bad Boy!!

I would check all you ecm to engine block grounds. I think when you put it back together you missed something.

95% of the time it's something simple!!

I think when you put it back together you missed something.

Yep,I missed a ground on my 94 a few weeks ago on the back of the engine,Made it do All sorts of weird things!!

 

[Paul Higg]

Junk! You got a C6? How much for that bad boy????

 

[gmjunkie]

Junk! You got a C6? How much for that bad boy????

It's a left over Loaded 08,MSRP $68,000+,it's Steve Martins (AKA:Vett Boy) new ride,I picked it up last Friday at a dealer in Peoria Il! We're doing some mods,CAGS Eliminator,Sill Protectors,3M Clear Bra, Paint Protectant,Mild to Wild Exhaust and Junks Special Tire Saving Alignment!! He's going to pick it up after Christmas, it's got 155 miles on it so far!!!!

 

[Paul Higg]

Oh my G*D!! What I wouldn't GIVE for a car like that but alas, maybe if I win the lottery.
:ugh

 

[tooez]

Could all my injectors got all gummed from sitting for the last couple years.

 

[Paul Higg]

YES!