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1994.5 - 1997 7.3L Power Stroke Diesel  

Excessive white smoke, backfire.

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Old Aug 25, 2014 | 11:54 AM
  #1  
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Excessive white smoke, backfire.

Pickup starts and runs fin untill about 1,800 rpms then it barrels out white smoke and back fires.
 
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Old Aug 25, 2014 | 01:33 PM
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That doesn't sound too good! Check your fuel filter and see if it's all black and oily looking.
 
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Old Aug 25, 2014 | 03:17 PM
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Nope fuel filter looks good, full of fuel. Changed the CPS and same symptoms.
 
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Old Aug 25, 2014 | 04:03 PM
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Also Injectors and turbo has less then 10,000 miles on them. New fuel filter.
 
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Old Aug 25, 2014 | 08:25 PM
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Broken valve spring or burned valve, maybe?
 
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Old Aug 25, 2014 | 09:23 PM
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When you say "backfire" is it coming from the exhaust or air intake filter ?
 
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Old Aug 25, 2014 | 10:56 PM
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Possibly valve spring or burnt valve. I was racing when it started.

It's coming from the exhaust. Sounds perfectly normal until about 1,800 rpms. When it starts missing at 1,800 and I let off the throttle it sounds normal then climbs to about 2,000 rpms before the rpms drop back down.
 
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Old Aug 26, 2014 | 06:03 AM
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If you were racing when it happened I think I would open up the valve covers and look for a broken rocker or bent pushrod.
 
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