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87 s10 blazer 2.8 tbi backfire, miss, runs sometimes

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Old Jan 13, 2012 | 11:34 AM
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sounds like a misfire or plug wires routed to the wrong fireorder. raw fuel dumped into the exaust and boom! the fireing orfer should be in the intake, check your timing to.
 
Old Jan 13, 2012 | 11:36 AM
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sounds like the firing order is wrong, misfire or timing is off. fuel is dumping into the exaust and collecting in the muffler.
 
Old Jan 13, 2012 | 03:36 PM
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Fire order is 123456, I would figure after a shop had it at least something that easy would be correct.
 
Old Jan 16, 2012 | 10:43 AM
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Wouldn't you think the shops checked timing and all. I got a miss I can't find. Tell us when you get an answer
 
Old Jan 16, 2012 | 02:43 PM
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Hey Show where is your fuel filter located if I may ask.
 
Old Jan 16, 2012 | 03:59 PM
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Have you checked the condition of the fuel injectors?
 
Old Jan 17, 2012 | 06:11 PM
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Originally Posted by neo71665
Fire order is 123456, I would figure after a shop had it at least something that easy would be correct.
you would think.. could be a crack in the cap vacumm advance not functioning.
Sean
 
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