Okay, This is my first post, so bear with me. I have a 1994 seadoo xp that I was given to see if I could get it running. The thing had been sitting since about 1998 and was flooded with water almost to the brim. I emptied it out took everything apart, cleaned up the engine, replaced all gaskets, honed the cylinders, dried out the electrical box and re-wired everything. When it was running, the original owner upgraded alot of things:
-oversized pistons
-new head with individual cooling lines in and out for both cylinders
-msd ignition
-aftermarket exhaust and intake
I left everything in there as it was except for the msd rpm increase. Amazingly enough I was able to get everything running smoothly out of water without too much trouble just in time for this weekend. I got it in the water hit the throttle, and it went about nowhere. The motor was running properly, runs all the way up to 7000 rpms, but it just hardly moves through the water at all (almost like something is blocking the intake grate). I get it from the loading dock to the beach where we discover that it is taking on water. We drain it, put it back in the water to see where its coming from. Found it is from the impeller shaft, though if we found that if at full throttle it wasn't filling up too fast, but at idle it starts to sink. Since I know where the leak is coming from, my question is why when at full throttle does it not move though the water when the motor is revving all the way up to the limiter. I did make sure that the impeller was not spinning freely on the shaft. I don't know what else would cause the motor to spin but no push it through the water. Any help would be great.
-oversized pistons
-new head with individual cooling lines in and out for both cylinders
-msd ignition
-aftermarket exhaust and intake
I left everything in there as it was except for the msd rpm increase. Amazingly enough I was able to get everything running smoothly out of water without too much trouble just in time for this weekend. I got it in the water hit the throttle, and it went about nowhere. The motor was running properly, runs all the way up to 7000 rpms, but it just hardly moves through the water at all (almost like something is blocking the intake grate). I get it from the loading dock to the beach where we discover that it is taking on water. We drain it, put it back in the water to see where its coming from. Found it is from the impeller shaft, though if we found that if at full throttle it wasn't filling up too fast, but at idle it starts to sink. Since I know where the leak is coming from, my question is why when at full throttle does it not move though the water when the motor is revving all the way up to the limiter. I did make sure that the impeller was not spinning freely on the shaft. I don't know what else would cause the motor to spin but no push it through the water. Any help would be great.
