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Thread: 96 700 slt

  1. #1

    Join Date
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    Unhappy 96 700 slt

    Hey all,
    I came home to a broke down 96 700 slt, the kids took it out of storage while i was away and said it ran great all weekend (which may or may not be true) untill it ran out of gas and would not restart. They burned up the starter trying to get it started. This engine was fully rebuilt 1 1/2 years ago so there is not many hours on it (Canadian summers are much to short!) I replaced the starter and cranked it over a few times when it came to a dead stop and seemed jammed?? I pulled the plugs and turned motor by hand, it seemed jammed, turned shaft back and forth and was then able to get motor to turn. I would be able to turn it for a bit and then it would jam again It doesn't seem to happen when piston is in the same position. There seems to be compression in both cylinders. Could this be a broken piston ring?? Should I pull the heads off?? Or try something else first?? Any thoughts or suggestions are greatly appreciated.
    Thanks


  2. #2
    ryandi2's Avatar
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    check the pump before you start tearing into the engine..

    if nothing is seen, pull the heads and post pics

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    Tap the flywheel housing around the front of the starter motor, then see if the engine is easier to turn by hand.

    Does it turn easier in one direction than the other?

    It may be the Bendix that is jamming

  4. #4

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    I pulled the cover off the fly wheel and the bendix doesn't seem to jam so I'll check the pump.

    Thanks

  5. #5

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    Unhappy 96 700 slt

    My pump seemed ok. I've pulled the drive shaft and something is still jamming. I pulled the heads off, the cylinders look good, when i turn the engine by hand I can hear a little tinkling of metal falling on metal and the occasional jamming of the engine. One of my plugs seemed darker than the other, not sure which side it came from (me bad). I am thinking I'll have to pull my cylinders off next. I've posted some pics, the damage on one of the heads was from before the previous rebuild. All help is appreciated.

    Thanks
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  6. #6
    I have a 96 SLT700 and ran into a similar problem. In my case the bendix was jammed against the flywheel. Hope this helps.

  7. #7

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    I pulled the cylinders off and found some metal shavings/grit in the crankcase, there was also some heat discoloring on the crankshaft between the two pistons, seems like alot of damage considering the wifes sons said that they just ran out of gas and could not restart!! Thinking if I kick thier a** and get charged that no jury could find fault with my response!!

  8. #8
    la90043's Avatar
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    did they run out of 2 stroke oil?

    running out of fuel would not do that.

    plugs look rusty/corroded.

  9. #9

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    I noticed that the bolts holding the oil pump were starting to come out and it was moving when the throtle was pulled. I am kicking myself for letting them anywhere near my ski.

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by waub-watch View Post
    I noticed that the bolts holding the oil pump were starting to come out and it was moving when the throttle was pulled. I am kicking myself for letting them anywhere near my ski.
    The domestic engine oil pump is driven by a stubby slot drive on the end of the crank shaft. If the oil pump was loose enough, the plastic drive piece might have disconnected or become damaged.

    No oil pump drive = no oil flow = unhappy engine.

    Usually the cylinder walls are the first to suffer when there is no oil. Any idea how long the oil pump might have been loose?

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