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New Parts = Bad MPG ?

Discussion in '1982-Present GM Diesel' started by RacerHead, Jan 8, 2003.

  1. RacerHead

    RacerHead Registered Member

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    I have replaced the injectors, injector pump, fuel pump, glow pulgs, and air filter. I went from getting 25-30 MPG down to 10-15, It has quite a bit more power now, quit smoking (black) under load. The place I brought the injector pump from said it was the Hi-performance, good for 300 HP.
    82 GMC /forums/images/graemlins/k5.gif 6.2, 3.07 Gears

    Thanks,
    Eric
     
  2. DieselDan

    DieselDan 1/2 ton status

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    Was the pump properly timed or did you just align the timing marks?

    Do you think your new found power may be causing your right foot to flex alittle more? /forums/images/graemlins/rotfl.gif
     
  3. RacerHead

    RacerHead Registered Member

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    The marks were just aligned up, The power increase was huge /forums/images/graemlins/thumb.gif How do i Time it ?
     
  4. Batmanjr

    Batmanjr 1/2 ton status

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    They might have just cranked the fuel up! Just a thought!
     
  5. BlueBlazer

    BlueBlazer 1/2 ton status

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    </font><blockquote><font class="small">In reply to:</font><hr />
    Do you think your new found power may be causing your right foot to flex alittle more?

    [/ QUOTE ]

    I think this may be where the problem lies.
     
  6. RLBstein

    RLBstein 1/2 ton status

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    If they cranked the fuel up, he would probably have "more" smoking (black) then less. At least thats what mine did when the guy turned mine up. I backed it off, and I too noticed a decrease in MPG after my complete rebuild. I think mine has to do with the 35's though.
     

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