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  1. Replies
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    Re: 95 xp motor swap question

    Maybe you can find an HX 785 conversion thread?


    Bill M.
  2. Re: SXR-800 possible Oil Water Mix in combustion chamber ????

    Seized.

    Was the head gasket blown?

    If I was to guess, when you were riding and the engine shut off
    like it ran out of gas or something. Then it restarted and seemed
    to run fine.

    That...
  3. Replies
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    401

    Re: Winter project Wave venture 700ís

    A vacuum leak will cause that. It is a common problem on
    Yamaha's and all the other brands. I have listed the places
    the 701's leak and possible repairs.




    On dyno runs for Yamaha...
  4. Re: 1995 Sea doo XP - Starts but quickly dies - New MPEM

    Does it have weak spark?


    Bill M.
  5. Re: New to Jet Skis. Engine problem. Need some guidance.

    Leaking inner main seals on older SeaDoo's is fairly common.

    I believe "Myself" has a work around for that.

    After you get the oil out of the bottom end, try checking the
    spark with...
  6. Replies
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    79

    Re: Kawasaki 57001-221 compression gauge

    That is the exact same compression tester in the web site's picture.

    Use Google or keep the conversion factor in your phone. Another option
    is to find a high quality pressure gauge in psi.
    ...
  7. Replies
    5
    Views
    401

    Re: Winter project Wave venture 700ís

    Have you started working on your idle problem.


    Bill M.
  8. Thread: Yamaha leak test

    by wmazz
    Replies
    1
    Views
    291

    Re: Yamaha leak test

    Kawasaki always recommended a pressure/vacuum test.

    The problem with only a pressure test is the main seals. The main seal
    has two functions: seal pressure, and seal vacuum. The problem
    is that...
  9. Replies
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    209

    Re: opinions on buying a 2001 xlt 1200

    I am suspicious of the idea that a "thinks mechanic did not torque down head bolts."

    That engine had stamped metal gaskets, and they should hold their torque
    over time. Composite gaskets are...
  10. Re: Just a turn of a screw! 99924-242-51 Supplement - Carburetor Low Speed Specificat

    I remember Kawasaki had an update for the 900stx carbs, but it
    was for the A1, A2 non cv carbs. But I did find this YouTube video
    with specs for the CV carbs.

    I don't recall Kawasaki issuing...
  11. Re: 1995 Sea doo XP - Starts but quickly dies - New MPEM

    There were 2 Xp's released in 1995. The 1995 Xp was a 720, and
    the 1995 1/2 was the Xp800?

    Bill M.
  12. Re: Ultra 250X New rebuild, good boost, low power. 40MPH Max

    4 strokes are not my thing, and as a watercraft mechanic I only changed
    the oil, but I was a motorcycle mechanic first, that got roped into working
    on Jet Ski's because nobody else wanted too.
    ...
  13. Replies
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    259

    Re: 1996 Wave Venture 1100 Running Rough

    Did you try what Myself suggested with the rag?

    Exhaust blocks oxygen and the engine can't burn exhaust twice,
    so the engine will not even get up on a plane with an exhaust
    leak.

    After that,...
  14. Re: Boyesen metal reed cages for 750sx brand new

    They look like Reed Stuffers.


    Bill M.
  15. Replies
    7
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    611

    Re: 650 PJS Head Pipe Crack

    Sorry this is late.

    That was the 650 "Cigar" Pipe? I liked that pipe. It was easier to
    get a good combination with the longer TL for some customers.

    The problem with this repair is that it is...
  16. Replies
    24
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    1,551

    Re: Question about Cylinder stamp/ head stamp?

    Water could have easily been sucked into the engine through a worn out
    front main seal directly into the front cylinder.


    There is a problem with crankshafts that have been exposed to rust. If...
  17. Replies
    6
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    259

    Re: 1996 Wave Venture 1100 Running Rough

    While you are riding it, or on your trailer?


    Bill M.
  18. Replies
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    1,551

    Re: Question about Cylinder stamp/ head stamp?

    You need to have the Driveline coupler splash guard to prevent
    water from being slung/sprayed into the flame arrestors while you
    are riding.

    It is one possible reason for the water damaged...
  19. Replies
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    1,551

    Re: Question about Cylinder stamp/ head stamp?

    That looks like water ingestion (while the engine was running)
    that eventually seized.

    You need to be sure the engine couplers splash guard is in place.
    If there is an aftermarket flush kit on...
  20. Replies
    5
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    669

    Re: 650sx popup pressure

    Sorry, but that is just bad info from a bad source.


    Bill M.
  21. Replies
    24
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    1,551

    Re: Question about Cylinder stamp/ head stamp?

    If that cylinder head is not flat, that could cause a problem. But those
    cracks are nearly harmless. Cracks that start and end within the water
    jackets will not effect how the engine runs.

    The...
  22. Re: 11/14 Pitch for 760 venture is hurting its top speed

    Checking the carbs is good advice.

    But since it is a Yamaha, I would inspect the low speed (pilot)
    screws. Yamaha's have problems starting and so people lower
    the pop-off or will turn out the...
  23. Replies
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    1,551

    Re: Question about Cylinder stamp/ head stamp?

    Did you have your new head remachined for more compression?

    And if so, how many psi is it supposed have?

    Do you know how many cc's were removed?


    Bill M.

    Head cracks are very unusual for...
  24. Replies
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    415

    Re: Kawasaki 750 X2 Swap Blown Head Gasket

    I didn't see a blown head gasket.

    But the Group K porting can create problems with your pipe
    and impeller choice.


    Bill M.
  25. Replies
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    425

    Re: starter turns in bursts

    The starter bendix used to be a common repair for early SeaDoo's.

    The engine would turn over as normal, and then the starter
    would disengage.

    Bill M.
  26. Replies
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    425

    Re: starter turns in bursts

    Try removing the gray pto cover and spark plugs. Try to turn the engine
    over by hand in both directions ~180 to 360 degrees.

    You are testing for something that is binding the engine. It could...
  27. Replies
    5
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    267

    Re: Kawasaki 750 SX: What does this Spring Do?

    Jet Ski's do not require a spring because of the jet ski's center of gravity,
    the jet ski is unstable after the rider falls off, and so it plows the nose
    and starts to circle.

    But carb...
  28. Replies
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    4,424

    Re: 1100 ZXI Dies after 10 minutes

    To test the spark, any equivalent to the NKG B8ES will do.

    I believe that part number has been replaced, but it was
    just a generic medium heat range spark plug with no resistor.
    If you can not...
  29. Replies
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    4,424

    Re: 1100 ZXI Dies after 10 minutes

    That could be normal if you are testing with resistor spark plugs.

    First pull the spark plug caps and spray the inside of the caps, and the spark
    plugs with brake cleaner to wash out any...
  30. Replies
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    231

    Re: 1992 Kawasaki 750 ss idle issue

    The most likely cause is a vacuum leak at the carb base gasket.
    But the vacuum leak could be anywhere on the intake, main seals,
    or poor manifold vacuum caused by rusted cylinders.

    The engine...
  31. Re: kawasaki 650 -surging after running for an hour then quitting

    The only printed information for testing the stator and CDI tests
    the resistance (Ohm Test). Even though that is what is in the manual
    Kawasaki recommended to it's dealers to use a different test:...
  32. Replies
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    Re: 650sx best mods for low end

    You made a poor choice.

    In order to avoid costly repairs, you need to recognize a problem.

    In this case your impeller and possibly your installation is the problem,
    not the cooling system.

    ...
  33. Thread: alot of x2 pics

    by wmazz
    Replies
    1,891
    Views
    513,591

    Sticky: Re: alot of x2 pics

    Sunkist

    569697
  34. Replies
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    Re: 650sx best mods for low end

    Pick an impeller and build around it.

    There were 3 generations of Skat Trak 650 impellers. The first two
    generation impellers contributed to many limited, and mod 650's seizing
    while doing a...
  35. Replies
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    1,751

    Re: 951 porting advice

    Free Porting works because cylinders tend to allow fresh fuel-air
    mixture to escape out through the exhaust port before it closes.
    There is more than one way for this to happen. Generally it is ...
  36. Replies
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    1,751

    Re: 951 porting advice

    YUP, I disagree.

    My old super cylinder was free ported, but it is dangerous.
    OK to discuss theory. But if you are not familiar with it, just a
    little too much free porting, and our diaphragm...
  37. Replies
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    934

    Re: Mikuni TMX triple?

    It would not be difficult to make your own 1 into 3 splitter and
    order 4 throttle cables, or maybe your local HD shop can make
    them.


    Bill M.
  38. Replies
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    Re: 650sx best mods for low end

    I am curious which head you are using and the compression
    that you have measured?

    Hopefully it isn't a Ocean Pro head. The really bad 650 head
    set-up was an OP head and a .040" head gasket....
  39. Replies
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    934

    Re: Mikuni TMX triple?

    I see a potential problem for the TMX carb at a constant wot
    operation. No primary choke (replacement parts). Is it part of
    the casting like the early Keihin flat slides?

    The original Mikuni TM...
  40. Replies
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    Views
    934

    Re: Mikuni TMX triple?

    Mikuni used to make a cable actuated choke to replace the
    hand operated choke (enrichment valve).
  41. Replies
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    934

    Re: Mikuni TMX triple?

    Do it like Kawasaki did for the H1, H2. A single throttle cable into a
    3 way splitter. Try Terry Cable, they should be able to fabricate one.

    Next you will need to synchronize all 3 carbs at...
  42. Replies
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    1,360

    Re: 650sx best mods for low end

    The TS exhaust manifold has a diverter similar to an aftermarket
    exhaust manifold.


    Bill M.
  43. Replies
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    1,360

    Re: 650sx best mods for low end

    Add a TS650 exhaust manifold to your set-up.



    Bill M.
  44. Replies
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    669

    Re: 650sx popup pressure

    No.

    Do you have a jet ski trailer? If so you can test it while it is on the trailer.

    If the engine just doesn't want to make rpm, look for an exhaust or
    fuel leak.

    How does it run with...
  45. Replies
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    7,809

    Re: Check out this cylinder failure. 720

    The text below was copied from the Sea Doo 2002 One Day School book.
    Page 4-24.

    The page I quoted from had 4 views of the piston, top, bottom, exh skirt,
    and intake skirt.

    Failure type:...
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