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  1. #21
    Join Date
    Jul 2016
    Posts
    2

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    My 1999 Mobius has been doing a similar thing, but feels
    Like it is choking out while pulling a skier. High speeds and high RPMs will bring it on after about 4 hrs of use. It never dies tho... Just kind of surges. Surfing and wakeboarding don't seem to affect it. It has no problems starting. Put in a new carburator, thinking that was the problem with no change. New high power fuel pump too. Sea foam, Heet, and ethanol free fuel. Does anyone have any ideas?

  2. #22
    Join Date
    Jul 2008
    Location
    Des Moines, IA
    Posts
    3,237

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    Quote Originally Posted by Kateh View Post
    My 1999 Mobius has been doing a similar thing, but feels
    Like it is choking out while pulling a skier. High speeds and high RPMs will bring it on after about 4 hrs of use. It never dies tho... Just kind of surges. Surfing and wakeboarding don't seem to affect it. It has no problems starting. Put in a new carburator, thinking that was the problem with no change. New high power fuel pump too. Sea foam, Heet, and ethanol free fuel. Does anyone have any ideas?
    You've already replaced the big ticket items so may as well do the smaller maintenance things if you haven't already: fuel filter, rotor/cap, plugs and wires.

  3. #23
    Join Date
    Mar 2003
    Location
    s.e. washington state
    Posts
    3,060

    Default

    Quote Originally Posted by Kateh View Post
    My 1999 Mobius has been doing a similar thing, but feels
    Like it is choking out while pulling a skier. High speeds and high RPMs will bring it on after about 4 hrs of use. It never dies tho... Just kind of surges. Surfing and wakeboarding don't seem to affect it. It has no problems starting. Put in a new carburator, thinking that was the problem with no change. New high power fuel pump too. Sea foam, Heet, and ethanol free fuel. Does anyone have any ideas?
    My 98 never had high speed issues but I've had the engine sporadically cutting out and then back in at different rpms. I replaced the electronic ignition twice in the boat in a span of 10 years and each time it fixed the problem. The second time I thought it was a carb issue and had it rebuilt which it probably needed after 15 years of use. No vapor lock here.
    1998 Mobius
    310 HP PCM
    SOLD

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