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2000 Ford Mustang whitish blue smoke running rough

Tiny
TRAVISEADS
  • MEMBER
  • 2000 FORD MUSTANG
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
The car has whitish blue smoke when first start up of the day. Using double the gas that it normally does and running rough. I ran diagnostics on it and the o2 sensors read clear but the stft and the ltft on s1 b1 and b2 or in the negative percentage reading. What exactly does this mean. I bought the car and already replaced fuel filler neck, the tank, brakes system, fuel pump, and alternator. I am really stumped without replace a lot of parts to make it all new. I do know that I have either a manifold gasket leak or a intake leak but the dealership wasn't for sure when we purchased it. And also told us that it would be fine. But then again they do that so they make money.
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Tuesday, February 25th, 2014 AT 9:07 AM

1 Reply

Tiny
KNOWLEDGE IS POWER
  • MECHANIC
  • 1,136 POSTS
The intake leak is causing the fuel trim issue. The smoke is from old valve stem seals leaking minute amounts of oil into the combustion chambers as the car sits. Its normal for a car of this age. The intake problem is very common with fords and the intake is available at local parts houses. Its not that hard to change yourself, really.
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Wednesday, February 26th, 2014 AT 5:13 PM

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