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In May 2008 we put a SBT Standard 787 Motor kit to replace a blown motor (old motor blew a bearing...). The motor went in, new fuel lines went in, carbs were rebuilt, etc. Every fuel, oil and cooling line was checked and hooked up properly. No lines have come lose, leaked, or clogged as far as I can tell. We did the proper breakin on the motor in 2008 when we put the motor in -- since then we've put maybe 15-20 more hours on the motor, thats it!
The last time we went out we ran the ski at 40-50mph for a little while, and eventually the motor just cut out (probably seized?). Turning the ski off for a few minutes let it start up again and ran fine... it died once or twice more before we figured out that if we idled it every 5-10 minutes for at least 15-30 seconds, it would run just fine. It was overheating. Let me be clear, we were not on a beach with alot of sand, there was no clogging of the intake ports for the cooling, and all indications were that the cooling system was acting as-expected. Oil was flowing just fine, and the plugs look great (not white at all, and not fouled... just perfect.)
I did a compression test today and the front cyl is @ 150, but the rear cyl is only @ 120. What happened?
I feel a bit screwed right now.. I didn't buy the premium engine with the extra warranty, but we've only put about 30 hours on the ski so far and we treat it extremely well. I've gone through the whole ski several times and there isnt anything jumping out at me that could cause this. I havn't yet taken the head off, but I'm wondering whether SBT will consider helping me out and partially covering the engine or not.. guess I'll call em tomorrow.
The last time we went out we ran the ski at 40-50mph for a little while, and eventually the motor just cut out (probably seized?). Turning the ski off for a few minutes let it start up again and ran fine... it died once or twice more before we figured out that if we idled it every 5-10 minutes for at least 15-30 seconds, it would run just fine. It was overheating. Let me be clear, we were not on a beach with alot of sand, there was no clogging of the intake ports for the cooling, and all indications were that the cooling system was acting as-expected. Oil was flowing just fine, and the plugs look great (not white at all, and not fouled... just perfect.)
I did a compression test today and the front cyl is @ 150, but the rear cyl is only @ 120. What happened?
I feel a bit screwed right now.. I didn't buy the premium engine with the extra warranty, but we've only put about 30 hours on the ski so far and we treat it extremely well. I've gone through the whole ski several times and there isnt anything jumping out at me that could cause this. I havn't yet taken the head off, but I'm wondering whether SBT will consider helping me out and partially covering the engine or not.. guess I'll call em tomorrow.
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