Hi new here and new to owning a seafood 2003 gtx di. Purchased with under 100 hrs has a flat spot ,won’t rev over 5,500 and gets to maybe 45 on the speedo. Starts easy and idles fine but very intermittent flat spot any help would be appreciated
I would check compression first. Should be 140psi give or take 5psi and no more than 5psi between cylinders.
If compression is good, start the ski on the trailer and then shut off with the button and listen for the RAVE valves to cycle two times. If the RAVE valves do not cycle then most probably the Rave solenoid is bad or you have a bad hose going to the solenoid.
Probably need to remove the RAVE valves and clean them as it is part of routine maintenance.
If still no love then check the water control valve on the exhaust for leaks.
Pulled apart cleaned and rebuilt water control valve no damage easy job
Found a second hand solenoid $40 and installed now have rave valve clicking on shut off again easy job
Revs freely on trailer to 7000+ rpm wet test tomorrow hopefully all good
Did you ever take the ski out and observe fuel pressure under load when the issue occurs ? Careful with the aftermarket fuel pumps. Lots of negatives. I would try cleaning yours before you install that aftermarket one.
Thanks bdesim2 for that already had it out the water and now plugs out,battery out,coil packs out, pump out,rave valves out every electrical joiner apart and checked now waiting for new parts until back in the water
Btw the wife not happy she’s just started enjoying the ski and now I’ve dry docked it grrr
Australia Day coming in 7 days so hopefully all new parts coming in time