1999 GMC SIERRA
125,000 MILES
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CHUNKMASTERFLASH
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I need to test and replace the fuel injectors could you give me some guide lines
Mar 20, 2013 at 12:24 PM
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WRENCHTECH
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We need a better explanation of what your problem is and what you are trying to find out.
Mar 20, 2013 at 12:41 PM
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CHUNKMASTERFLASH
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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.
Mar 20, 2013 at 1:26 PM
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WRENCHTECH
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Again................... what is the problem with the truck?
Mar 20, 2013 at 1:31 PM
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CHUNKMASTERFLASH
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the right side is burning more gas then the left and when starting it idles fast. Idle is also not even jumps around.
Mar 20, 2013 at 1:35 PM
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CHUNKMASTERFLASH
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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.
Mar 20, 2013 at 1:37 PM
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WRENCHTECH
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How did you conclude that one side is burning more gas than the other?
Mar 20, 2013 at 1:45 PM
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CHUNKMASTERFLASH
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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.
Mar 20, 2013 at 1:49 PM
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WRENCHTECH
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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.
Mar 20, 2013 at 3:13 PM
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CHUNKMASTERFLASH
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They just said something about a spider being cracked
Mar 20, 2013 at 3:45 PM
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WRENCHTECH
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First of all, what engine does it have?
Mar 20, 2013 at 3:58 PM