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04-20-2008, 05:53 PM
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#1 | |
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AF Newbie
Join Date: Mar 2008
Location: wyandotte, Michigan
Posts: 7
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2000 4.3 Backfires on start up
Ok, I have a 2000 4.3 Blazer, First the fuel pump went bad replaced with new one, then a little while later I had to replace my fuel spider with the MFI upgrade. Only problem I have left now is once in awhile on start up it will backfire cause the engine to engage with the starter causing a grinding sound. I thought for shure that the leaky fuel regulator was causing this but it's still there. I had one mech tell me that he has seen bad crank shaft sensor cause this and take out starters. Any ideas would be greatly appreciated. Dist cap, wires, plugs, have been replaced.
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04-22-2008, 03:46 PM
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#2 | |
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AF - Advisor
 
Join Date: Mar 2004
Location: Nashville, Tennessee
Posts: 2,920
Thanks: 113
Thanked 41 Times in 39 Posts
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Re: 2000 4.3 Backfires on start up
Moisture inside the distributor cap causes that problem on my stuff.
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