Recent content by Orbitalatx

  1. Orbitalatx

    Low compression pto 96 GTX

    Replaced cylinder with one off ebay for a 96 gtx. Did the pistons and rings. Rectifier needed replaced also. Water control valve fixed. Carbs low jets 1 turn and high 0 pto high 1/2 and she rips. Glad to finally get this thing on the water again after 2 years. Thanks all for the help.
  2. Orbitalatx

    Low compression pto 96 GTX

    Ok look at the jugs real close. The left one the part number pulls a 1999 787 but the right one is correct 1996 787. Should I be concerned? The thickness of the cylinder sleeve and taper is completely different.
  3. Orbitalatx

    Low compression pto 96 GTX

    Is this part reusable with the putting on the right?
  4. Orbitalatx

    Low compression pto 96 GTX

    I had a feeling you was gonna say that Mac. Already started planning for it. Yes ski took on water last season because of a carbon ring that busted I was a mile from shore and engine died suddenly omw back. Started sinking and got a tow from another boat. Electricals fried all the way through...
  5. Orbitalatx

    1996 787 no spark

    You could put the key in and check with a 12v test light red wire with purple stripe coming off holder relay to cdi. Check holder relay fuse then check the red/black stripe wire from mpem to holder relay
  6. Orbitalatx

    1996 787 no spark

    The mpem supply's power to the cdi. If the mpem is not suppling the power to cdi then you can check the holder relay is functioning correctly.
  7. Orbitalatx

    Low compression pto 96 GTX

    Also on pto side piston you can see a four leaf pattern. What could that be from?
  8. Orbitalatx

    Low compression pto 96 GTX

    Ski was hard starting in the water pulled it out and starts good on trailer for two seconds. Went back home tested compression and got mag side 150 and pto 125. Pulled engine and found some scoring on these. The gaskets seems flat and old. Are they shot? Should I go ahead and rebuild the lower...
  9. Orbitalatx

    1996 GTX- How to Premix question

    I drive like I'm back in Iraq so lots of hard stops lead foot etc I'm surprised the ski is on the back when I get to the lake lmao.
  10. Orbitalatx

    1996 787 no spark

    I found out after the fact that I actually had a 96 gtx 787 which does have the cdi separate. I replaced mpem cdi and magneto and finally was able to get spark. I also replaced all the wiring from mpem to rear box and mag to rear box. My mpem and my magneto was bad. I bought an arieltek mpem so...
  11. Orbitalatx

    1996 787 no spark

    Here is my recent discussion about the same issue. I threw all these parts at it and it ended up being the magneto and magneto cover. Ordered a lightly used one off eBay and fixed all my issues with spark. 97 gtx no spark
  12. Orbitalatx

    1996 787 no spark

    Unfortunately sounds like either a bad mpem or a bad magneto not just the pickup. It could also be the wiring from mag to rectifier and mag to rear box. You need to check magneto first. As mag turns and tells cdi to fire white wire back at ignition coil. So your problem is there I have narrowed...
  13. Orbitalatx

    1996 GTX- How to Premix question

    The 96 gtx 787 holds 15 gallons of fuel. I would go 40:1, some people run 50:1 just fine, but to be safe for a trip just run 40:1 it's more oil and more piece of mind. A quick premix app can be downloaded on your phone or just do the math ahead of time. But always leave space to add the oil...
Back
Top