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87 s10 blazer 2.8 tbi backfire, miss, runs sometimes

  #11  
Old 01-13-2012, 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.
 
  #12  
Old 01-13-2012, 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.
 
  #13  
Old 01-13-2012, 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.
 
  #14  
Old 01-16-2012, 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
 
  #15  
Old 01-16-2012, 02:43 PM
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Hey Show where is your fuel filter located if I may ask.
 
  #16  
Old 01-16-2012, 03:59 PM
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Have you checked the condition of the fuel injectors?
 
  #17  
Old 01-17-2012, 06:11 PM
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Originally Posted by neo71665 View Post
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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