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  1. #1
    Bronze Member
    Join Date
    Feb 2010
    Posts
    90
    Location
    High Rolls NM
    Tractor
    MF 50H LBH

    Default Adjusting fuel mixture Lucas Cav injector pump

    After a phone consultation with DieselTech I had a go at "derating the fuel" on my MF50 backhoe. Continued from this thread http://www.tractorbynet.com/forums/m...-problems.html

    Took the little plate off the side of the pump and found this

    The notch in the middle is what moves after you loosen 2 12 point 5/16 bolts. Turn the engine over until you can get to the one on the away side, then back to the one that is near the notch. Loosen both bolts a turn or 2.

    Then to adjust fuel move that little notch. In the direction of rotation to lean, away from rotation to richen. Full lean looks like this, the notch is at the bottom of the picture now.

    I moved it to full lean and put it back together. By the way, you need a good quality 12 point 5/16 wrench as those bolts are TIGHT.

    I couldn't get it to start. Bled it & bled it and no joy. So, took it back apart and moved the adjustment back half way to where it had been. More bleeding & more bleeding and finally fired up. It seems better but haven't really tried it on a steep hill to see what I have.

    I think I just hadn't bled it enough the first time, readjusting it probably wasn't necessary.

    So, that's all I know for now other than the info I found on the web was not correct.

    Joe H

  2. #2
    Veteran Member banjodunn's Avatar
    Join Date
    Jun 2008
    Posts
    1,169
    Location
    Oz

    Default Re: Adjusting fuel mixture Lucas Cav injector pump

    G'day has it fixed your excessive smoke prob Joe?


    Jon

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