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  1. #1

    1998 XL 1200 ruff idle

    So I took my new to me 98 1200XL out on the lake yesterday, ran pretty good but I have a couple of issues. 1- idels very ruff, not a miss but almost. 2-seems top speed is a little low, about 53-54mph. 3- every once in awhile when I go to take off from a dead stop she will rpm but not go anywhere. Thoughts?


  2. #2

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    Top speed's about right for stock, is that from GPS?
    Sounds like some cavitation from dead stop.
    You can check fuel filter for rough idle but I'd be leaning toward a carb rebuild

  3. #3
    caliburn's Avatar
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    what is your idel RPMs at, in water and out?

  4. #4
    silvercrxsir's Avatar
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    What's the compression #'s

  5. #5
    Compression is 120psi in all 3 cylinders, idel is around 14-1500 rpm in water. Have not checked out of water idel speed. Compaired to my 99 XL 700 this ski runs rough and not very smooth, maybe normal for a 1200?

  6. #6

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    Quote Originally Posted by wipeout View Post
    Compression is 120psi in all 3 cylinders, idel is around 14-1500 rpm in water. Have not checked out of water idel speed. Compaired to my 99 XL 700 this ski runs rough and not very smooth, maybe normal for a 1200?
    They definetly shake alot under 2000rpm. It's normal and everything you said how it performs is normal except the cavitation. Check prop to housing clearance.

  7. #7
    caliburn's Avatar
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    I dont know what your idel is saposed to be set at but mine ideled ruff to and was like 1200/1300 so I turned it up to 2000rpms out of water to what it was saposed to be the throttle cable stretches alittle bit over time and it helped alot but mine is a GP1200R so do a search to find Out what your idel should be that will probobly fix that idel issue.

  8. #8
    Yamaha artisan Cutlass's Avatar
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    yep, the non powervalve 1200 in the 98 xl1200 is a shaky SOB. some worse then others. Mine smoothed out quite a bit after a fresh top end and carb rebuild, but still shakes.

  9. #9
    I just finished a full rebuild on one last Monday. New rear crank bearing, new pistons/rings, hoaned cylinders, same compression and pressure tested with no air leaks, tight wear ring, full tank of gas and reasonably flat conditions with no appreciable wind. Mine hit the same 53/54 but I did not see 55 at all. Bone stock with a fresh carb rebuild. My low speed adjusters ended up turned out to 2.5 turns each and stock setting on highs FWIW. Sold it Monday as well. Oh yea...and yes, it shakes like a leaf at idle like my other 1200 non-pvs.

  10. #10
    Thanks for the input everyone.

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