Question about 1989 Ford F 250

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Excessive fuel smoke coming from my exhaust

I just bought an 89 ford with a 7.3L diesel. i noticed that there is an excessive amount of fuel smoke coming from the exhaust. and it seems to be using a lot of fuel. and it seems like it is straining pulling a small trailer.

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  • ctagivens May 19, 2009

    well i think i will try the fuel filter someone else mentioned that to me i am not really familiar with diesels.

  • Dan C May 11, 2010

    This really sounds like a timing issue (too late), but I'm not that familiar with your particular engine to say for sure. Did the previous owner put in fuel pump modifications or injectors for more 'power'?

    Is the turbo spinning?

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  • Ford Master
  • 2,007 Answers

Change fuel filter. I know it doesn't make sense. It seems like you're getting too much fuel, so the filter shouldn't be plugged. But that's how they act.

Posted on May 19, 2009

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If you're problem is the same, you will find that the problem occurs when the engine is hot, when the engine has been ticking over for a short period and then you hit the accelerator the heavy smoke is the excess fuel burning off, equally if the idle period is longer you will notice smoke in you're rear view mirror. Audi are well aware of the common engine faults, proof being in the 3 years or 60000 mile warranty, the only top motor brand that don't offer 3 years unlimited ( Bmw, Merc, lexus, hell kia & hyundi have more confidence), you may think I have been unlucky and landed a bad one, I bought a second one as i thought the same which low and behold i had full injector replacement and £1800 turbo fault. each car developed the faults between 63000 & 77000 miles, if you buy a second hand diesel audi with a 3.0 engine or above you are buying the name not reliability which is proof when you look up audi's on autotrader, there isn't many with more than 150000 miles, the same can't be said about BMW & MERC which have there cars with 250000 plus.

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===
I will take a 5-10 minutes high rpm (not redline) ran on the highway.
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When was the last valve adjustment?

Please post the actual odometer on the engine and I will follow up on it.

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