It gives many indications leading me to believe this is a fuel problem but I'm having problems resolving the problem. Actually acts like a bad ignition coil to an extent but not totally. 
After purchasing last year, I went though all the normal stuff and took the ski to Florida for a week. Road it about 5 hours or so and it began to act up, not taking fuel, only idling. I came home and found a scoured piston which I thought might be the problem. New top end. Last week road the ski for a couple of hours. Same problem developed. Would not take fuel. I took it out when my daughter got back complaining and I had the same problem. The next day, I tried to get it back out on the water again and.... same problem. I cracked the fuel cap, switched the fuel valve, etc.... and Had to limp back to the dock.
When I got home I Pulled the carb and found some white oxidized stuff under the check valve seats for the fuel pump. The pump was not drawing fuel up the line. I cleaned the carb, installed a Mikuni kit, checked pop-off, sealing, leaks... all good. Removed the fuel tank, cleaned out (it was clean), pulled the baffle tube checked (it was clean) and I even replaced the new fuel lines I changed out last year. I even changed out the vent line hoses, replaced the new fuel filter and gasket. I pressure tested the fuel system Today took the ski out and road almost an hour, came back for fuel. Filled up. Got about 2 miles from the dock it began running rough and quit. Starts back up with a little finesse and I massaged it back to the launch. At the launch, I did some checking went out and hammered down a few times.... it quit. I did this a few times, results the same.
This is an enigma for sure. Last year I noticed this problem began when I hit some big waves and the hull took a few shocks. Lately that is not the problem. The Carb is not loading up and the ski runs pretty good. I don't see where I can have a restriction. so I have to look deeper. Could I have a crank seal leak that is not letting the carb pump get a proper pulse when the engine gets good and hot ?? Could it be electrical? I'm gonna pull the plugs and have a look. I'm just glad the ski doesn't leave me completely. LOL
I am going to check the fuel pump. Is there a prescribed method for checking that? I wouldn't think it draws much vacuum which would make it difficult to measure. I am also wondering of the carb may need replacing because the check valves are not sealing properly.
Input is appreciated.
After purchasing last year, I went though all the normal stuff and took the ski to Florida for a week. Road it about 5 hours or so and it began to act up, not taking fuel, only idling. I came home and found a scoured piston which I thought might be the problem. New top end. Last week road the ski for a couple of hours. Same problem developed. Would not take fuel. I took it out when my daughter got back complaining and I had the same problem. The next day, I tried to get it back out on the water again and.... same problem. I cracked the fuel cap, switched the fuel valve, etc.... and Had to limp back to the dock.
When I got home I Pulled the carb and found some white oxidized stuff under the check valve seats for the fuel pump. The pump was not drawing fuel up the line. I cleaned the carb, installed a Mikuni kit, checked pop-off, sealing, leaks... all good. Removed the fuel tank, cleaned out (it was clean), pulled the baffle tube checked (it was clean) and I even replaced the new fuel lines I changed out last year. I even changed out the vent line hoses, replaced the new fuel filter and gasket. I pressure tested the fuel system Today took the ski out and road almost an hour, came back for fuel. Filled up. Got about 2 miles from the dock it began running rough and quit. Starts back up with a little finesse and I massaged it back to the launch. At the launch, I did some checking went out and hammered down a few times.... it quit. I did this a few times, results the same.
This is an enigma for sure. Last year I noticed this problem began when I hit some big waves and the hull took a few shocks. Lately that is not the problem. The Carb is not loading up and the ski runs pretty good. I don't see where I can have a restriction. so I have to look deeper. Could I have a crank seal leak that is not letting the carb pump get a proper pulse when the engine gets good and hot ?? Could it be electrical? I'm gonna pull the plugs and have a look. I'm just glad the ski doesn't leave me completely. LOL
I am going to check the fuel pump. Is there a prescribed method for checking that? I wouldn't think it draws much vacuum which would make it difficult to measure. I am also wondering of the carb may need replacing because the check valves are not sealing properly.
Input is appreciated.
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