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Back Fire under a load

   
  #1  
Old 04-18-2008, 07:54 AM
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Back Fire under a load
I have a 2004 F-150 Reg Cab V-6 Automatic with 45,000 miles that will back fire if it's under any kind of load. It drives OK if I'm easy on the gas pedal but if I push it the engine will back fire untill I let up on it. Any help would be appreciated.
 
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  #2  
Old 04-18-2008, 06:24 PM
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Sounds like a timing issue.
 
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Old 04-18-2008, 08:23 PM
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I would check the sparkplugs and wires or [cop].
 
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