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Thread: fuel pressure

  1. #1

    fuel pressure

    o4 msx 140 what should be fuel pressure with eng off
    or running

    mine will run for 10 - 15 minutes then die let set for 5 or 10 it will crank back up and run then dies again like the fuel pumps getting hot and shutting off


  2. #2
    casey67's Avatar
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    I don't remember the spec's,but the service manuals are in the tech section/info.
    All of K447's posts also have a link to the manuals.

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by texas View Post
    o4 msx 140 what should be fuel pressure with eng off
    or running

    mine will run for 10 - 15 minutes then die let set for 5 or 10 it will crank back up and run then dies again like the fuel pumps getting hot and shutting off
    Welcome

    The Ficht fuel pump is electric, and fuel pressure will drop to near zero when the engine shuts down.

    When the engine is cranking or running pressure should be between 20 and 30 PSI, and be stable.

    Click the links below for lots of info

  4. #4
    it is actually not the fuel pump it is at 23 running it loses fire after it gets up to temp let it set for 15 min, it will crank up and run till it gets up to temp then it shuts off spin over and ever thing else just no fire

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