'87 550 Fuel Pressure Problems
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  1. #1
    PWCToday Newbie
    Join Date
    Aug 2010
    Location
    Utah
    Posts
    36

    '87 550 Fuel Pressure Problems

    Can anyone shed some light on how the 550's pressurize the tank. I am having and issue and checked
    the basics I have found here. Good pulse on the line from the crankcase to the carb and no holes
    in the line, the check valve works only passes air one direction, seals on filler tube cap and front fuel
    filler cap are all good and intact, other fuel lines are good. The fuel/water separator (I think that is what
    it is called) fills a small amount .. should it fill all the way? After cranking it there is no pressure that realease
    from the tank when I open the cap. The fuel pump has been rebuilt, took it back apart to verify it was
    put together correctly.

    Any ideas? Thanks in advance.

  2. #2
    PWCToday Newbie
    Join Date
    Aug 2010
    Location
    Utah
    Posts
    36

    Re: '87 550 Fuel Pressure Problems

    So in reading more through some other posts I may be chasing my tail. It seems tank pressure may not be the issue... so to backtrack here is the problem....

    Finished rebuilding this 1987 550 that I started way too long ago. Topped it off with fuel and ran it on a hose in the yard for a good 15 minutes with no issues. Topped off the fuel once again and got her on the water and she ran great for 15 to 20 minutes, headed back to shore to just inspect things as this was a rebuild, all looked well and headed back out on the water...ran another 10 minutes or so and started to get a few cut outs like she wasn't getting fuel so I headed back in to check things. Nothing obvious so I primed it and headed back out, ran a few more minutes then more cutouts, pulled the plugs and they were dry, primed it and she'd fire but would not run past the prime. The tank was about 1/3 down (stock size tank), topped it off and it ran great again until the fuel used up then I get the cutouts and eventually she won't run. Any clues with the new info. Thanks.

  3. #3
    PWCToday Regular
    Join Date
    Dec 2016
    Location
    Portland
    Posts
    114

    Re: '87 550 Fuel Pressure Problems

    Check in tank fuel pickups? From what you described the issue begins when fuel is below a certain level?

  4. #4
    PWCToday Newbie
    Join Date
    Aug 2010
    Location
    Utah
    Posts
    36

    Re: '87 550 Fuel Pressure Problems

    Yes. Once the fuel gets about 1/3 down from the top it starts cutting out. Fuel pickups have both been checked and are clear.

  5. #5
    PWCToday Regular
    Join Date
    Dec 2016
    Location
    Portland
    Posts
    114

    Re: '87 550 Fuel Pressure Problems

    My question was are the pickup tubes cracked?

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