Seadoo Speedster with 787 Engines Bogging after hot start

[bobpilot]

HI.
I have a Seadoo Speedster 1998 with 787 two stroke SBT engines which start up first time from cold and run great and continue to perform well until I shut down the engines for about 5 minutes and then restart.

Both engines again start first time without any issues but when I get to about 1/4 throttle the left engine bogs down and doesn't want to rev any higher or cuts out and stops.(restarts up again first time) sometimes with a bit of throttle jiggling it will pull through and perform normally again I have tried pulling the choke a little when bogging but seems to make it worse. if the engine has been off for a half hour or so there isn't much of a problem.

Any Ideas or anybody has a solution would be greatly appreciate​d.

 

[suke]

Those have blowers for the engine bay, no? If so you using them? Gotta get em fresh air.

 

[racerxxx]

Yep, try lifting the engine cover after you stop and leave it open and then try it. If that works try the blower to rid the engine bay of fumes.

 

[bobpilot]

Thanks for the replys.
I have only just got the boat so thats a good tip.have only run the blower for about 30 seconds at a time thinking to save the battery,

 

[suke]

Ahhhh, yep I'm going to guess that'll solve your problem.

 

[laug6615]

I've got the exact same boat and have the exact same problem. Never knew that it may just need some fresh air in there. I'll give it a try too, thanks for the advice.

 

[Coastiejoe]

The blower MUST be used especially after the engine is heated up. Two reasons. The engine wants fresh air and you want to clear the inner hull of fumes for your own safety.

This is a very common issue. 4 minutes is the recommended minimum.