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I have a question about my 1997 Ford F-250

Tiny
97STROKER
  • MEMBER
  • 1997 FORD F-250
  • 332,000 MILES
The truck has a 7.3 powerstroke and when I start it up in the cold it smokes white really bad then it turnes into light blue and also it slightly smokes light blue at operating temp. I have outruled the injector o rings. Turbo o rings, piston rings and injector cups. Could it be the fuel pressure regulator?
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Sunday, January 29th, 2012 AT 4:39 AM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Light blue smoke is oil burning, you may have bad vale stem seals and worn valve guides.
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Sunday, January 29th, 2012 AT 4:50 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
The white smoke sounds like coolant. Check to make sure the coolant isn't going low.
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Sunday, January 29th, 2012 AT 4:50 AM

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