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  1. #1

    Msx 140 fuel pump

    Had it running first time this spring
    I had drained the fuel tank in the fall cause I needed it for the generator and forgot to refill
    It started and ran for 5 mins
    Then quit
    I kept wirling it over and nothing
    No fuel from fuel rail valve
    I tryed the brown wire ground out ,, nothing

    Fuel pump I frigured
    I took it out. Not hard really just unbolt the steering
    Took out pump. Unhooked the motor out of the fuel sender unit
    Shook all the fuel out and let it dry for a while
    The I hooked the positive and negative posts on a long wire to a battery (fully charged). Nothing. Nothing from pump
    I think thatís the no fuel problem


  2. #2
    Quote Originally Posted by Msxslayer View Post
    Had it running first time this spring
    I had drained the fuel tank in the fall cause I needed it for the generator and forgot to refill
    It started and ran for 5 mins
    Then quit
    I kept wirling it over and nothing
    No fuel from fuel rail valve
    I tryed the brown wire ground out ,, nothing

    Fuel pump I frigured
    I took it out. Not hard really just unbolt the steering
    Took out pump. Unhooked the motor out of the fuel sender unit
    Shook all the fuel out and let it dry for a while
    The I hooked the positive and negative posts on a long wire to a battery (fully charged). Nothing. Nothing from pump
    I think thatís the no fuel problem
    Anybody agree. ??

  3. #3
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Msxslayer View Post
    Anybody agree. ??
    You sure you connected the correct 2 pins on the 4-pin pump top connector to the battery?

    If you open up the pump body you can access the actual pump motor electrical contacts. Apply 12 volts there, see if the pump motor runs.

  4. #4
    martincom's Avatar
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    If your fuel pump is indeed defective, be leery of the so-called aftermarket "direct replacement". Most draw far more current than the EMM switching components can tolerate and the stator coil/regulator can support.

    It appears there maybe a suitable replacement, but I haven't seen any one actually post they've installed one and had long term success with it. See the last post of this link for sources.

  5. #5
    martincom's Avatar
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    I took it out. Not hard really just unbolt the steering
    The PWC gods were smiling on you. I usually have at least one on the steering column bushing support plates bolt's threads gall. I have to grind off the bolt head. When the threads gall, the "T" nut strips out its mount in the plastic and just spins. Add anti-seize to the threads when you re-assemble.

  6. #6
    Quote Originally Posted by martincom View Post
    If your fuel pump is indeed defective, be leery of the so-called aftermarket "direct replacement". Most draw far more current than the EMM switching components can tolerate and the stator coil/regulator can support.

    It appears there maybe a suitable replacement, but I haven't seen any one actually post they've installed one and had long term success with it. See the last post of this link for sources.
    Hopefully itís not the same one I ordered on eBay. Direct fit haha.

  7. #7
    martincom's Avatar
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    Quote Originally Posted by Msxslayer View Post
    Hopefully it’s not the same one I ordered on eBay. Direct fit haha.
    I'd suggest you check the current draw of whatever you source for a replacement before you install it. I've checked them by immersing the bottom half in a partially filled bucket of mineral spirits and then powering them up with a current meter in the loop. I'm not quite sure if water would have a negative impact and gasoline is far too explosive to have around test leads that will arc when connecting. If the post I cited above doesn ot have the current specs within it, it probably has links to the one that does. I don't recall, at this time, just exactly what I measured and posted the last time I checked one. There are quite a few threads about members who have purchased the ebay "direct replacements" had issues that ultimately were the result of too much current draw.

  8. #8
    Quote Originally Posted by martincom View Post
    I'd suggest you check the current draw of whatever you source for a replacement before you install it. I've checked them by immersing the bottom half in a partially filled bucket of mineral spirits and then powering them up with a current meter in the loop. I'm not quite sure if water would have a negative impact and gasoline is far too explosive to have around test leads that will arc when connecting. If the post I cited above doesn ot have the current specs within it, it probably has links to the one that does. I don't recall, at this time, just exactly what I measured and posted the last time I checked one. There are quite a few threads about members who have purchased the ebay "direct replacements" had issues that ultimately were the result of too much current draw.
    Ok with my multimeter I geuss, What is the Max current for the fuel pump saposed to be?

  9. #9
    martincom's Avatar
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    The typical current draw of the fuel pump is 1.9amps. I'm not sure of your electrical skills, but your multimeter when configured to measure current (amps) would bi in series with the load (pump, in this case) not across it as would be the case when measuring voltage.

    Here are a few threads about the incorrect fuel pump replacements:


    http://www.greenhulk.net/forums/showthread.php?t=262098

    http://www.greenhulk.net/forums/show...=261201&page=2

    http://www.greenhulk.net/forums/showthread.php?t=261017

    http://www.greenhulk.net/forums/show...=259920&page=3

  10. #10
    Quote Originally Posted by martincom View Post
    The typical current draw of the fuel pump is 1.9amps. I'm not sure of your electrical skills, but your multimeter when configured to measure current (amps) would bi in series with the load (pump, in this case) not across it as would be the case when measuring voltage.

    Here are a few threads about the incorrect fuel pump replacements:


    http://www.greenhulk.net/forums/showthread.php?t=262098

    http://www.greenhulk.net/forums/show...=261201&page=2

    http://www.greenhulk.net/forums/showthread.php?t=261017

    http://www.greenhulk.net/forums/show...=259920&page=3
    HFP-378 Polaris Genesis FFI/Genesis FICHT/Genesis I/MSX 140 / Virage I/Virage TXI 1999-2004 Personal Watercraft Fuel Pump with Installation Kit
    This is what I got. Opinions? Was on amazon
    Hfp378 pump
    Life time warranty

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