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  1. #1

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    1996 sl 900 hard to start when warm?

    the 96 sl900 starts great cold,ride a while (warm operating temp) shut it down,crank & crank & crank no choke with choke no throttle 1/4 throttle 1/2 throttle full throttle boom starts runs great.

    Note when warm not starting, raise the pump(prop) out of water starts up, rev motor, set prop in water hit starter starts right up runs great? Maybe dragging starter?

    Tried swapping red-white wire to orange pin in box, bilge pump ran all the time. So I swapped it back .
    Last edited by K447; 06-12-2014 at 08:41 AM.


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Red-White wire? Perhaps you meant Red/Purple.

    If you were trying to do the modification per Service Bulletin PWC-00-05, you need to make an adapter wire, not just move a connection on the terminal board.

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    So when warm it will not restart without a lot of cranking and messing with the choke, correct?
    Is this true even if the motor is shut down for only a few seconds?

    But if you lift the jet pump out of the water it will start right away? Then shut down, put back in water, it will again restart right away. Do I have this right?

  4. #4
    Polarisitis loonatik's Avatar
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    Quote Originally Posted by sandonut View Post
    ... with choke no throttle 1/4 throttle 1/2 throttle full throttle boom starts runs great.
    Sounds like you're too rich especially on the low or needle/seat valve not closing when engine not running. When engine is flood, you do need to hold throttle wide open to clear out excess fuel before it would start.

  5. #5

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    k447 with jet out of water(after cranking in water a while) about 30 seconds,throttle 1/2 open fires up. Clear it out,set the jet in the water hit the starter fires right up & gone. Starts great on the trailer,back to back 30 minutes 1 hour 5 hours next day. Over night in water starts ok,gets warm here we go again.

  6. #6

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    Loonatik rebuilt carbs pop-off pressure is right. Maybe slow jet-screw needs adjustment? Set to manual specks.Yes I know wot to clear flood.Thanks though,some one had to tell me that long ago.I guess I'll try adjusting the slow jet.

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by sandonut View Post
    ... with jet out of water (after cranking in water a while) about 30 seconds, throttle 1/2 open fires up. Clear it out, set the jet in the water hit the starter fires right up & gone.

    Starts great on the trailer, back to back 30 minutes 1 hour 5 hours next day.

    Over night in water starts ok, gets warm here we go again.
    Wake up the display before you start the engine. Switch to RPM mode on display.

    What RPM is it cranking at? Does it crank more slowly when it refuses to start in water?

  8. #8

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    DA and I was wondering how to hook up a tact. What rpm should I be looking for? Some times my thinker just don't think.thanks

  9. #9
    Polarisitis loonatik's Avatar
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    Here you go. Remember, this is RPM in the water, on trailer it could be somewhere like 2000 - 3000 rpm.
    Click image for larger version. 

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  10. #10

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    thanks for the input loonatik. Let me bring you up to speed.This is a 1997 slt780 hull, with a 1996 sl900 in the 1997 780 hull,with 1999sltx 40mm 1050 carbs on the sl900 motor installed in 1997 slt780. I know (Johnny Cash mobile),but yea it works great just a few bugs. Kind of scared to touch it. 48-50 mph(MFD??). 447 , bryanP just to name a few.

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