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Fuel injectors not spraying - Sierra 3500 GMC Cars & Trucks

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  • Anonymous Aug 30, 2008

    fuel injectors not spraying when turning the ignition in the on position!

  • craigerschop Jan 07, 2009

    I have fuel presure and the injectors are not releaseing fuel I can't fine the a fuse for the injectors and I looked in the fuse panel under the hood and can't find any PCM fuses where do I look?

  • VICTORRESP55 Apr 16, 2009

    i have the same problem. I was coming back home from getting my truck (1989 chevy silverado c3500) smogged and it stalled. I have replaced the fuel pressure regulator and checked all fuse. There's fuel reaching the injectors but they do not spray. can anyone help me.

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5 Suggested Answers

  • 88 Answers

SOURCE: NO FUEL SPRAYING AT FUEL INJECTOR. I HAVE CHANGED

always check fuel pressure and "pulse"at injector .

Posted on Sep 16, 2009

todd0708
  • 247 Answers

SOURCE: NO FUEL SPRAYING AT FUEL INJECTOR

change the injector,its the only thing left

Posted on Sep 14, 2009

  • 2002 Answers

SOURCE: 1987 S-10 CHEVY

Do you hear the fuel pump buzz for a few seconds when you turn on the key? If not you have an electrical problem. If you do, then trace the fuel line from the tank to the first point where it connects to something and loosen the connection. Turn the key on and see if you get fuel. If not then the problem is between there and the tank. If you do then try other end . Keep doing this at every junction and you should find the cause of your problem. Hope this helps.

Posted on Sep 22, 2009

  • 87 Answers

SOURCE: # 6 fuel injector sprays all the time on my 94

I would hate to say it may the ecm, I would swap with a known good ecm.
see if that makes any difference. good luck!

Posted on Oct 27, 2009

Exhaustking
  • 43 Answers

SOURCE: fuel injectors spraying to much gas

to be honest, with an 89, all you can do is replace the injector. how an injector works is there is a small amount of current that is run to a coil around a rod (if you are unaware, this produces magnetic fields). the magnetic field produced pulls up what is usually a small ball, allowing fuel to go through the tip of the injector nozzle. all you can do to fix this is to buy different injectors.

just a question..why do you think they are spraying too much fuel? because it may just be that you have excessive fuel pressure and your fuel pressure regulator is bad. hit me back.

Posted on Jan 02, 2010

Testimonial: "fuel pump regulator it keeps on flooding"

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2 Answers

Fuel injectors not spraying


Bad fuel pump or relay to fuel pump or blown fuse to Main Relay or bad relay, could cause no spray from injectors.
Hope this helps.

Apr 02, 2015 | 2012 Mazda 6 i Sport Sedan 2.5L 4-cyl....

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91chevy 5.0 l TBI won't spray any fuel out of injectors .can spray chemtool carb cleaner in throttle body and it starts up . have replaced distributor twice still no injector spray ?


could be clogged up, clean injectors. gunk in bottom of fuel tank can be sucked through and block injectors. also check fuel pump.

May 07, 2014 | Cars & Trucks

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93 astro van fuel injectors not spraying


Unless you have a clogged fuel line going into the throttle body, something got missed.
With the key on, can you ground one of the injectors and make it spray ?

Jul 18, 2013 | Cars & Trucks

1 Answer

Fuel injectors spraying to much gas


to be honest, with an 89, all you can do is replace the injector. how an injector works is there is a small amount of current that is run to a coil around a rod (if you are unaware, this produces magnetic fields). the magnetic field produced pulls up what is usually a small ball, allowing fuel to go through the tip of the injector nozzle. all you can do to fix this is to buy different injectors.

just a question..why do you think they are spraying too much fuel? because it may just be that you have excessive fuel pressure and your fuel pressure regulator is bad. hit me back.

Jan 02, 2010 | 1989 Chevrolet Suburban

1 Answer

Cyl. 1 and 3 missfire


An injector can pulse without spraying fuel. They can get plugged or get build up on the nozzle and squirt fuel instead of spraying or not spray at all.. Your fuel rail is common rail, so your fuel line should go through a pressure regulator and then to a rail that dispenses the fuel equally. I have heard of cases where kia replaced the fuel rail to solve this problem. All the injectors will get the same amount of fuel pressure with this system, so if you have injector pulse and no missfires on #2 and #4, i would suspect clogged injectors. You can have an injector flush performed, which is probably not a bad ideal any way, to see if you can clean them up, or just replace the bad injectors. You can also inspect them visually to see if there is any debris on the nozzles. I wouldn't recomend that to an inexperienced person. Fuel can be very dangerous. I have head of techs removing the injector from the rail and running the car and watching the injector spray the fuel. Not recommended at all. All it takes is one spark or hot surface. Do a fuel injection clean, or buy some BG brand 44k fuel treatment and put in the tank first, the fill it up with gas. You can remove the injector and soak it in injector cleaner also to help free it up. If any of these don't help, time to take it in...they are also experiencing ECU problems..

Mar 07, 2009 | 2002 Kia Rio

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