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  1. #1

    New Guy with "New" 2001 Challenger

    Wife and I just bought the boat, looks like purely fresh water, not sure how many hours. Given it's age I am going to replace all the oil injection pump hoses, dump the oil tank and run Amsoil. Which one has the blue dye in it so I can monitor the flow while bleeding the pumps ? I'm also going to use a Wix fuel system water remover to soak up the ethanol junk in the fuel tank. I have the service and owners manuals and will run down the checklists before she hits the water. Anything special I should be on the lookout for ?

    TIA

    Pete


  2. #2
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    bad advice

  3. #3
    Quote Originally Posted by nmpeter View Post
    bad advice
    Very helpful thanks

  4. #4
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    see other forum posts on that specific model, to see why I advised on bad advice.

    The merc models are just tough to deal with and parts are even tougher as seadoo dealers don't carry anything and merc dealers will typically stop answering your calls if its for anything but a complete engine or pump
    search for other threads on this model

    fun boat when they run good.

    oh yeah, change the sparkplugs

  5. #5
    Tool Bag water worx's Avatar
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    Sorry to be negative but they are junk.

  6. #6
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    Quote Originally Posted by water worx View Post
    Sorry to be negative but they are junk.

    i'm sure they were darlings when they were new


    but the flat out lack of support from mercury for independent repair shops just makes them a bad buy


    circumstance might be different if you are cozy with your local merc dealer ( by marriage usually)

    as it is, my sarcasm is oft misunderstood, but for pete's sake buy ANYTHING else but one of these!

  7. #7
    Quote Originally Posted by water worx View Post
    Sorry to be negative but they are junk.
    Boat is actually MY 2000, Not 2001. It has twin 720 Rotax, not a mercury engine. I have first hand experience with both the engines and the pumps and feel comfortable wrenching on them. Sorry for not giving accurate info in my initial post. The 720's are a pretty solid motor as 2 strokes go.

  8. #8
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    well that was a total waste of time for everybody, wasn't it?

    that's a really good configuration, a bit under powered for some but the 720 is the energizer bunny of small block seadoos

    ok then

    change the fuel lines if they are gray
    change pump oil
    grease driveline bearings
    flush injector oil and DRAIN fuel tank
    pull flame arrestors and check choke plate screws, if they come out, you are screwed, they will destroy the motor
    check driveshaft floating bearing clamps, I'd replace them with norma style clamps

    DO NOT mess with the throttles, they are no longer available, and used ones go for a small fortune
    control cables lubed really well

    find somebody with a code scanner if possible, pay them and try to get actual engine hours

    have fun!

  9. #9
    Quote Originally Posted by nmpeter View Post
    well that was a total waste of time for everybody, wasn't it?

    that's a really good configuration, a bit under powered for some but the 720 is the energizer bunny of small block seadoos

    ok then

    change the fuel lines if they are gray
    change pump oil
    grease driveline bearings
    flush injector oil and DRAIN fuel tank
    pull flame arrestors and check choke plate screws, if they come out, you are screwed, they will destroy the motor
    check driveshaft floating bearing clamps, I'd replace them with norma style clamps

    DO NOT mess with the throttles, they are no longer available, and used ones go for a small fortune
    control cables lubed really well

    find somebody with a code scanner if possible, pay them and try to get actual engine hours

    have fun!
    Pete thanks for the advice !! I was talking to some of my Ski-Doo owning friends and fuel quality/lack of was the first thing they threw on the table. In Maine we get crap-loads of water contaminated fuel regularly due to climate change and Ethanol separation. Everybody drains fuel prior to storage, period, even the 4-stroke guys do it. My to-do list just got bigger !

  10. #10
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    New Guy with "New" 2001 Challenger

    Let your pals know that draining the fuel on a ski with fuel injection is not advised as it leaves the pump exposed to air which can lead to an early demise.

    stabilize then drain in the spring, dump it in your tow vehicle, unless it is a diesel
    Last edited by K447; 03-15-2019 at 10:07 AM. Reason: tow, not toe ;)

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