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Type: Posts; User: jchance; Keyword(s):

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  1. Replies
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    Re: 97 GTX electrical post question

    As for the grounding posts, ALWAYS ground an open plug wire there. There is a risk of fuel ignition if any fumes present and you cause a spark. Believe it-it has happened to one of my sons!
  2. Re: 97 GTX, 787, Will not run, starts sometimes, out of ideas?

    Pay extra attention to the Mag carb with the fuel pump, one way valve and the impulse line off of the engine. You would get no fuel flow if one or more of these are not working properly.
  3. Re: 97 GTX, 787, Will not run, starts sometimes, out of ideas?

    Rebuild the carbs using ONLY Mikuni kits. The springs you need are NOT included in the kit. Pay special attention to the pump/valve portions of the carbs. the manuals are at the top of this forum.
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    Re: 97 Seadoo XP 787 blowback/backfiring issues

    Bill O'Neal passed away but here is the shop info.

    Address: 444 W Carter Dr unit c, Glendora, CA 91740
    Phone: (626) 914-9509


    www.watercraftmagic.net
    ...
  5. Replies
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    456

    Re: anyone with a 97 gtx?

    There is a lower plate with 2 air hoses attached to allow the engine to breathe and vent. I don't have a photo. Go to the parts microfiche and it will show you all of the parts.
  6. Re: 1995 Sea-Doo GTX takes on water and cavivates badly

    Check your carbon seal and washers on drain plugs. Anything done that could have affected your engine alignment?
  7. Re: Time for new 787 engines... how long to install?

    Swapping is easy; 2 hours tops if the PTO doesn't give you too much problem. Use a LARGE lever with a pipe attached to loosen. Timing the rotary valve isn't too bad IF you get the indicator wheel. ...
  8. Re: Part number 275500270--what to use instead

    Picked this one up for a steal in pieces. Didn't really need anything other than a new pick-up and rotary valve cover. Not sure why the owner had removed some of the parts he had but hjis wife...
  9. Re: Part number 275500270--what to use instead

    Thanks to both of you. Grumpy--Cheap hose kinks. Got some GOOD fuel injector hose and it fits well. Will remember the modulator hose!
  10. Part number 275500270--what to use instead

    Per the title, this is the impulse tube between the case and the fuel pump. It has a sharp 90 degree bend in it on a 767 engine. They are no longer available. I have tried fuel hose but it tends...
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    455

    Re: 96 GTX drain hoses

    Maybe it got cut? Maybe it broke. I doesn't matter unless you are using a vented battery.
  12. Re: 97 Slotted RAVE valve in place of 96 not slotted valve?

    Not a problem, just swap them. I would also get new bases if they are the original ones too.
  13. Replies
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    Re: 1996 Seadoo GTX 787 electrical issue

    Bad stator = no run
    Bad pick-up = no run
    Bad MPEM = no run

    Does it run with the red wire unplugged from the rectifier? If so, replace it.
  14. Thread: Motor Install

    by jchance
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    489

    Re: Motor Install

    Simple answer--YES
  15. Replies
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    664

    Re: 2017 Sea Doo GTX Gauge

    The gauge is either the water or the air temp. Did you notice which one it said? Did the gauge quit working entirely or just the temp? If the gauge kept working it probably was just the sensor.
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    Re: 96 xp not getting max rpm or speed

    Only thing wrong besides sitting for a year. To many to count things that can cause a 787 to run poorly. I would suspect you have trashed the fuel system. Start there with the lines and carbs.
  17. Replies
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    1,065

    Re: Steering cable housing broken

    Grumpy may be grouchy but he is RARELY wrong. Listen to him!
  18. Replies
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    669

    Re: Seadoo plastic oil pump driveshafts

    Have used both, black versions fail, old ones don't.
  19. Replies
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    752

    Re: 1996 Seadoo GTX MPEM smoked

    If 96 not available, get a 97 and rework a couple of the harness connectors. It will work. been there, done that.
  20. Thread: Nose cone oil

    by jchance
    Replies
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    1,837

    Re: Nose cone oil

    He is correct. Looks and smells just like SeaDoo oil.
  21. Thread: Nose cone oil

    by jchance
    Replies
    7
    Views
    1,837

    Re: Nose cone oil

    Use Mobil 1 synthetic
  22. Re: Is plastic welding the only solution to the leaking oil tanks?

    New tank.
  23. Replies
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    730

    Re: 1998 Sea-Doo GTX

    Only 1 water outlet on back by the handle. Where is this other place you see? You have something wrong. The service manuals in the sticky at the top of this forum will have your cooling system.
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    1,748

    Re: seadoo power valve question

    Agree with SpitAndDirt. If you want help, give enough info to diagnosis the problem and be civil about it! Replace the RAVE valve AND the base.
  25. Replies
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    Re: WSM Rotary Valve

    Check the RV cover as well. If the clearance to too much it will cause hard starting. While at it on these older machines it is better to replace and stay 1 ahead of the problem since you already...
  26. Thread: 96 gtx 787

    by jchance
    Replies
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    965

    Re: 96 gtx 787

    I have 3 of those. If you have ruled out fuel delivery issues, go with the RV. Considering the age, that is the fastest horse. Change the valve AND cover and it should start like new. I know mine...
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    Re: Engine Alignment or Rebuild Jet pump?

    Could be either or could be engine itself. When was the last time you serviced the bearings? Fluid look Ok? Bearings feel smooth when turning the shaft? I found that most seadoos eventually get a...
  28. Replies
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    Re: 96 GTX wont start

    Replace the battery with a known good one. I've found that a maintainer does not always keep a battery where if needs to be to start these engines. If the solenoid works, it works. If not, replace.
  29. Replies
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    Re: 96 GTX wont start

    Sounds like the starter solenoid.
  30. Replies
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    Re: 1996 Seadoo XP - MPEM Diagnosis

    The gray boxes are the same. The internals are MOSTLY the same. The regulator and the CDI (black box) are the same across the years, BUT the MPEM changed along with some programming. Yours looks...
  31. Re: Seized my rebuilt 787 engine, need your advice

    After the rebuild, did you add oil to your fuel to make it more like 25:1? Also, are you using the oil injection at all or premixing? Most of the rebuilders will have you enrich the feul for the...
  32. Replies
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    Re: 2007 GTX won't rev over 4000 rpm please help

    When one of mine did this it was due to a bad coil. Ran well at low RPM but broke down at higher ones
  33. Replies
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    Re: 787 Water Regulator Performance

    This isn't entirely true. A leaking bellows will put water out into the hull and is easy to find. If the spring rusts or fails, then the valve is supposed to lock closed and allow the water to flow...
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    Re: 1997 Seadoo GTX Starting issue

    Rebuilding is really easy but be sure to use ONLY the OEM kits, no aftermarket! Also make sure the pop-off is correct. If you don't think you can do it, call Chris at Watercraft Magic. They do...
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    Re: Local Sea Doo dealer closes... took my deposit

    Post what you know.
  36. Replies
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    Re: Electrical gurus--a new problem

    Thanks for the smart answer and proud you are so good. Yes I do own a multimeter and believe it or not, actually know how to use it! It came with my engineering major.

    I swapped the entire...
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    Re: Electrical gurus--a new problem

    Swapped and load tested the battery, no change. Rear box is dry and all connections are good as in initial post. It acts like a capacitor. It fires off, quickly runs out of voltage and dies. Then it...
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    Re: Electrical gurus--a new problem

    All look good
  39. Replies
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    Re: Help with E-box issue on 96 GTX

    Never starts. Just turns over and quits.
  40. Replies
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    Help with E-box issue on 96 GTX

    Bill--I hope your health is OK as I haven't seen you post anything here in months. I have an issue that you might be able to diagnose.

    I am trying to winterize one of my 96 GTXs. I cannot get...
  41. Replies
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    Electrical gurus--a new problem

    I am trying to winterize one of my 96 GTXs. I cannot get it to start! Battery is charged and good. Ground and positive are good. Ground from E-box to stator is good. !2+ volts the front box. If...
  42. Replies
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    Re: '96 SeaDoo GTX cranks but won't start

    Check battery voltage first 767 engines very voltage sensitive. Engine can turn over but not make a spark. If voltage low, recharge or put in a known good battery and try again. Even though the...
  43. Re: 96 xp 787 no start in the water. Just on land

    Compression is low, but equal Could be gauge but should be 150 per cylinder. That old could be several things but when it cranks on land but not water, RV clearance is the fastest horse. Measure...
  44. Re: 1997 SEADOO GTX Carb Linkage Question (787)

    It just pops off.
  45. Replies
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    97 GTX help- not seen this problem before

    97 GTX ran fine last year, winterized and put up on battery tender over the winter. Got out yesterday and would not start. First, battery slightly low. Charged battery. Still no start. It acts like...
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