I need to test and replace the fuel injectors.

Tiny
CHUNKMASTERFLASH
  • MEMBER
  • 1999 GMC SIERRA
  • 125,000 MILES
I need to test and replace the fuel injectors could you give me some guide lines
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Wednesday, March 20th, 2013 AT 12:24 PM

10 Replies

Tiny
WRENCHTECH
  • EXPERT
We need a better explanation of what your problem is and what you are trying to find out.
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Wednesday, March 20th, 2013 AT 12:41 PM
Tiny
CHUNKMASTERFLASH
  • MEMBER
I was told they needed to be changed but wondered if there was a way to test them and make sure they are bad. They cost so much that I am hoping all they need is to be cleaned instead.
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Wednesday, March 20th, 2013 AT 1:26 PM
Tiny
WRENCHTECH
  • EXPERT
Again. What is the problem with the truck?
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Wednesday, March 20th, 2013 AT 1:31 PM
Tiny
CHUNKMASTERFLASH
  • MEMBER
The right side is burning more gas then the left and when starting it idles fast. Idle is also not even jumps around.
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Wednesday, March 20th, 2013 AT 1:35 PM
Tiny
CHUNKMASTERFLASH
  • MEMBER
I am trying to help my disabled neighbor. So I will have to call and get more information if needed. Thanks for the assistance so far.
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Wednesday, March 20th, 2013 AT 1:37 PM
Tiny
WRENCHTECH
  • EXPERT
How did you conclude that one side is burning more gas than the other?
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Wednesday, March 20th, 2013 AT 1:45 PM
Tiny
CHUNKMASTERFLASH
  • MEMBER
He said he had a mechanic look at it. It's just the mech around here have been known to cheat people so bad that he asked me to check into it.
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Wednesday, March 20th, 2013 AT 1:49 PM
Tiny
WRENCHTECH
  • EXPERT
You need to get this diagnosed properly. It's rare to have even one injector go bad and unheard of for all of them. You may have a totally different issue.

If it's the drivers side getting loaded up, then you are likely looking at a bad regulator. Much more common. Either way, the upper intake has to come off.
Any gtech that knows what he's doing could easily diagnose this.
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Wednesday, March 20th, 2013 AT 3:13 PM
Tiny
CHUNKMASTERFLASH
  • MEMBER
They just said something about a spider being cracked
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Wednesday, March 20th, 2013 AT 3:45 PM
Tiny
WRENCHTECH
  • EXPERT
First of all, what engine does it have?
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Wednesday, March 20th, 2013 AT 3:58 PM

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