water in the engine

[coolmike]

i have seadoo gtx di 951. i just rebuild my top end with new piston.but when i take it to lake to brake in, it run fine for about 40 mins when i turn it off for 30 mins to cool down. it wont start again.it took home take the sparks off it got water on it. i see that the gasket between the cyclinder and the exhaust is bad, is shooting water out there i took the sparks plug and shoot all the water out. replace the bad gasket it start fine. today i took it the lake today it runs fine for about 30min then i turn it off. it wont start again i took the sparks plug there water on it again i dont know how the water get in there this time i already change the bad exhaust gasket

 

[Dr Honda]

Well... the bad gasket wasn't the issue.

I would say, either you have a cracked head shell, a bad O-ring under the head, or the head is warped.

Since you are down in TX... your exhaust manifold could have a hole on the inside. (salt corrosion)

Either way... I think the top half of the engine needs to come apart to find the leak.