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  1. Replies
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    Re: Coffman xpl951 Please help

    Yes, you dont have to have the water injection but you must run min 135 jet at the stinger to cool the rubber couplers
    We set them up for closed course with no injection, but ran high compression...
  2. Replies
    9
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    335

    Re: Coffman xpl951 Please help

    Have a copy of original
  3. Re: 98 GTXL 951 - Missing siphon tube cause leak?

    Yes , good find
  4. Re: 1998 and 1999 GSX both have to pull choke to get up and go

    Are they genuine MIKUNI rebuild kits ?
    Use anything else and you have problems like this

    You replace the o/rings around the adjuster screws ?
    They come in different sizes for each screw.

    Did...
  5. Thread: 951 Woes

    by SURFnTURF
    Replies
    62
    Views
    3,216

    Re: 951 Woes

    .75 out on the high is too rich, closed will be perfect. 95 lows out 1.5 is good. Black spring with 2.0 n/s. Bend the props trailing edges so it revs to 7k -7100 this lets the engine rev and with...
  6. Replies
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    766

    Re: Never trust the blue marks

    Turn upside down, Remove lower case, align crank by using case half surfaces and weights for crank and balancer being opposites. Apply Gasket sealer, torque up. Have done it a few times, some my...
  7. Replies
    5
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    494

    Re: Splitting hull

    Have done it a few times with seadoos but not kawasakis, I just slowly pry apart and using heat lever until they seperate
  8. Replies
    32
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    1,259

    Re: Xp with 787 motor weird spark issue

    Easy fix,hey.......
  9. Replies
    32
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    1,259

    Re: Xp with 787 motor weird spark issue

    You need to run resister plugs in all seadoos after 94 I think
    If not you will experience all types of weird things electronically as you have just done
    Non resister plugs dont produce a better...
  10. Replies
    32
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    1,259

    Re: Xp with 787 motor weird spark issue

    Are u using resister plugs ?
  11. Replies
    12
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    574

    Re: Huge backfire 96 xp

    If it doesn't start stop giving it throttle as you are pumping fuel ⛽ right through the engine and exhaust. And when it Sparks its like a bomb �� going off.
  12. Replies
    3
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    291

    Re: 2000 gtx 951 carb/ pisser question

    Does the hose that smokes spit water out as well ?if so head gasket has gone.
  13. Re: Looking for 951/947 people for trouble shooting.

    Are you sure its no spark when under load or water injestion from head/exhaust gasket failing?
  14. Replies
    9
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    677

    Re: Almost unheard of!!!

    I have found that if you dont use them you will loose them.......
    We had a period going back 10 years that we rode at least once every week for a period of 3 years
    After flushing all the engines...
  15. Replies
    201
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    11,563

    Re: 951 carbed in 3D

    They go well with sponsons........
    With the white manifold or a grey ported one, if you machine back the top face (where the exhaust pipe mounts) about 5mm (yes 5mm) and install a white pipe along...
  16. Replies
    201
    Views
    11,563

    Re: 951 carbed in 3D

    The only reason why you put the spacers on are to keep the reeds away from the turbulence of the crank, Rinaldi reeds are the best for both low end response and top end flow.They have to be fitted in...
  17. Replies
    201
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    11,563

    Re: 951 carbed in 3D

    These haven't been cut down as the top hole is still cylindrical, or you have bored it again as it will be out of round as it gets lower but yes this is similar all though I take out a bit more on...
  18. Replies
    201
    Views
    11,563

    Re: 951 carbed in 3D

    If you take the trailing edge back to 18.5 you can get these engines to sing into the 73-7400rpm with a white pipe,reeds have to be perfect but rinnaldi's will give you a noticeable hit.Without them...
  19. Replies
    201
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    11,563

    Re: 951 carbed in 3D

    Pop off will be too high with this,I run the Black 80 gram, or 65 gram,you need pop off to be under 20 psi with 2.0mm N/S
    Disregard the red outline under 21psi as I cant remove it
  20. Replies
    201
    Views
    11,563

    Re: 951 carbed in 3D

    Whatever the thickness of the reed spacers (10mm) you need to reduce the same from the top of the intake manifolds.
    When cut down it then exposes cavity's inside the manifolds where the carbs bolt...
  21. Replies
    201
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    11,563

    Re: 951 carbed in 3D

    Bolt �� on some works sponsons, richen the low speed up a little and it will carve like nothing you have ever ridden.
  22. Replies
    3
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    340

    Re: stupid 650 muffler dont know what it is

    It's called an Aquamuff, used instead of a waterbox.
    They worked very well when you couldn't fit a waterbox in. Made my 650sx sound like a truck ��…
  23. Re: 98 GSX Limited 951 Abnormal Starter Cranking

    These engines are 20 years old now,parts will fail.I regularly change bendix and ring gears on 951s.
  24. Replies
    1
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    720

    Re: 1998 XP 951 starter issues

    The 98s had issues with the bendix gear, the timing on the mpem was advanced too far under 400 rpm while cranking and it would chip teeth off
    Each time it stopped at the same position and metal...
  25. Replies
    11
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    757

    Re: MSD water injection for sale

    Hi JHR can you give me a $$$ on the Injection units please
  26. Re: Seadoo 951 carb intermittently dies/shuts off

    Its lean on the high speed circuit just a little due to the r&d filter.
    Open the adjusting screws 1/4 turn,check the pop off, you want them to be no more than 20psi
    951s dont like being slightly...
  27. Re: 99 seadoo gtx 951 TPS adjustment procedure

    Yes, between 99-04 had them
  28. Replies
    5
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    452

    Re: 2000 seadoo xpl miss/ surge

    Might be lean on the know speed jet , as 3500rpm is the point where the high speed circuit starts .Any surging is normally a fuel delivery problem
  29. Re: 99 seadoo gtx 951 TPS adjustment procedure

    They have a TPS on the throttle cable that changes the timing curve on the MPEM

    First the TPS when working properly, sends out 5 volts vdc between zero throttle and 80 % throttle, after 80%...
  30. Replies
    30
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    1,445

    Re: 951 misfire, electrical issue

    98 flywheel position and 99+, if it helps
  31. Replies
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    1,445

    Re: 951 misfire, electrical issue

    Have had a front bearing collapse on a stock 951 and the magneto would oscillate which at higher rpms cause a mis due to the magneto rubbing on the pick up.
  32. Replies
    30
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    1,445

    Re: 951 misfire, electrical issue

    I never trust coils, even if they measure up in spec.I had one do similar , changed coils out, perfect after. Might be, may not ?
  33. Replies
    3
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    386

    Re: Cracked Btm case, 951 RX carb

    Its not on the bearing race area so just have it welded up and will be 100 %
  34. Replies
    8
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    363

    Re: 951 water pan at bottom of engine

    Seadoo 951 DIs come with knock sensors on the head, the mpem controls timing when detonation is close so the whole article is rubbish. Detonation occurs in the combustion chamber not in the crank...
  35. Replies
    8
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    363

    Re: 951 water pan at bottom of engine

    Nothing to do with detonation, DIs create alot of heat from the magneto as they run all the electronics. The pan just cools the bottom crank bearings.
  36. Replies
    5
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    227

    Re: 99 XPL hard crank

    Crank Bearings seized,Counter Shaft Bearings seized,Piston rings scored to bore,Pistons scored to Bore,Counter Shaft/Crank gears locked, could be any number of things
    Has it suddenly stopped while...
  37. Replies
    18
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    Re: 951 spray bar location on stock pipe

    The stock pipe or white stock pipe loves HEAPS of water dumped into the head pipe,either by spray or by a solid stream.
    The more the better, the most important point is the position of the injection...
  38. Replies
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    2,257

    Re: 2002 Sea Doo XP Over heating?

    You need to pull the head and see what crud you have in there
  39. Replies
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    2,257

    Re: 2002 Sea Doo XP Over heating?

    Do you have water coming out the rear from the crankcase drain ?
  40. Replies
    39
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    2,257

    Re: 2002 Sea Doo XP Over heating?

    While its on the hose you are sending the water first through the pipe, to ascertain if the head,cylinders and exhaust manifold is not blocked you need to squeeze the hose onto the top head fitting...
  41. Replies
    39
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    2,257

    Re: 2002 Sea Doo XP Over heating?

    You wrote this awhile back, to check if this is happening see below
    Can you pull the 12.5mm hose of the head (#28) and the 12.5mm hose going to the bottom of the pipe
    Place the garden hose onto...
  42. Replies
    39
    Views
    2,257

    Re: 2002 Sea Doo XP Over heating?

    Can u go back to the water diagram on first page and hook up the hose to your ski at the back of the pump.But first remove Hose #13 running from the rear water valve to the mid pipe and run it...
  43. Replies
    39
    Views
    2,257

    Re: 2002 Sea Doo XP Over heating?

    #9 is usually thread tape or Loctite ,I think you meant #8
    The rear water regulator on the water box is always open and flows water to the #5 fitting no matter what revs are
    The only thing it does...
  44. Replies
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    2,257

    Re: 2002 Sea Doo XP Over heating?

    This is correct

    You can run the hose through the engine while its not running just make sure you block no 29 hose off.
  45. Replies
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    2,641

    Re: 2000 rx problems

    2.0 N/S will flow more than enough fuel for this set up.As long as your pop off is below 21psi.
    I use 2.0 N/S and black spring with highs 167.5 closed,95 lows open 1.5 turns,87.5 if pumps are used...
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