fuel injectors - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-08-2003, 09:42 PM   #1
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how do i take these out the check to see if they are working properly.
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Old 10-08-2003, 09:50 PM   #2
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You have to pull the fuel rail to remove them. Not the kind of fun you're looking for, so I'd suggest getting a mechanic'* stethescope, and listening to them at idle. You should hear them clicking.

This won't tell you if they're clogged. Removing them and cleaning them, then replacing all the seals would be a good idea if you have any question, but make sure they're firing first.

What are your symptoms?
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Old 10-08-2003, 09:54 PM   #3
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allright.. here are the symptoms. I think it'* an ignition problem, but i figured i might as well check the fuel filter, and injectors. When i first start.. low rmps. I get a miss. Like a jerk. When i first get in the car it runs fine. I run it for about 5 mins the it starts to miss once i get past 0 boost. Bad miss. Not jerky.. but a very fast miss. Every once in a while as it'* missing the power will kick in a little then kick out. I just had one of the coils replaced, becuase it was bad. Replaced sparkplugs, and pulg wires about 6 months ago. Tranny fluid and filter changed at same time.
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Old 10-08-2003, 09:59 PM   #4
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Ok, I went through something similar not too long ago. One problem can cause another.

I had a coil that would break down with heat. Giving me a miss. Because of the miss, I was fouling 2 plugs for that coil........but then I noticed 2 others. Made me realize I was killing 2 coils. I replaced all 3 and have had no further problems, but a contributing factor was a weak alternator, causing a low-current/voltage situation with my ICM.


http://www.bonnevilleclub.com/forum/...=high+rpm+miss
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Old 10-08-2003, 10:03 PM   #5
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Is it safe to drive on. I have to go to Chrlotte tomarrow, and will it kill my gas milage. Becuase i plan on checking that on that way!
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Old 10-08-2003, 10:20 PM   #6
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How much do coils cost anyways?
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Old 10-08-2003, 11:08 PM   #7
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It'* safe to drive, just take it easy. My MSD coils cost about $120 for all three.
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