RXDI 2003 - Missing at high speeds

[seadoorxdi]

Hi guys,
I recently purchased a 2003 Seadoo RXDI - 951cc 2 stroke. Starts and runs great, great to ride etc.
One thing I noticed was at high RPM/speed, it misses slightly. Someone suggested spark plugs however they were brand new.
Any ideas what could be causing this? It is not a major issue, I am just concerned there could be an larger underlying issue causing it (cracked piston etc)

Appreciate any help you can give me.

Cheers, Ash

 

[Dr Honda]

you are probably just bouncing off the rev limiter.

What is the RPM when it happens?

 

[seadoorxdi]

Hi Dr Honda,

Thanks for your reply, that is a good question actually, I wasnt looking at the revs (stupidly I know). I had a mate ride it who knows a bit about skis and he said that the engine was breaking down while loaded. Thinks issue with spark (or maybe a cracked head?)

Thinking might take into shop and get them to have a look? any other thoughts?

Cheers, Ash

 

[Dr Honda]

Don't take it to a shop. They will charge a small fortune to troubleshoot the problem, and they probably won't fix it, since most shops won't put it out on the water to give it a proper test.

I doubt the head is cracked. But since it's a Di Engine... it could be a fuel issue.

BUT... I wouldn't jump to any conclusions. If it's running well, other than a top end miss... I'm going to say it's the rev limiter.