Sea-Doo xP still won’t go over 4000rpm

[Newbie to seadoo]

Run and stay on but won’t go over 4000rpm and 35mhp tops. I rebuilt the carbs and replace the fuel lines and the fuel selector. A guy said I might be running on one cylinder and some said it might be my Reed valve?

 

[mikidymac]

What year XP?

Did you use genuine mikuni kits? New needle and seats? Is your fuel strainer leaking air?

It could also be the voltage regulator but that isn't as common on the 951 XP's.

 

[JeremyD615]

You can pull the plugs and check if you’re running on one cylinder. I would suspect it’s something in the carbs as well though...

 

[Newbie to seadoo]

You can pull the plugs and check if you’re running on one cylinder. I would suspect it’s something in the carbs as well though...

I put new spark plugs and after using I checked them 1 is completely clean

 

[Newbie to seadoo]

What year XP?

Did you use genuine mikuni kits? New needle and seats? Is your fuel strainer leaking air?

It could also be the voltage regulator but that isn't as common on the 951 XP's.

Yes I used mikuni kit... where do I locate fuel strainer ?

 

[Newbie to seadoo]

What year XP?

Did you use genuine mikuni kits? New needle and seats? Is your fuel strainer leaking air?

It could also be the voltage regulator but that isn't as common on the 951 XP's.

And it’s 2002

 

[JeremyD615]

The fuel/water separator is where the feed line to the carbs runs from. It’s usually in the front of the ski, but I’ve never dig into the newer XP hull, so I can’t confirm that. If you have one plug clean, you’ve got more going on than just an air leak at the separator. You’re probably going to have to pull the carbs again and double check everything. Is it the mag side or the pro side that’s not firing?

 

[Newbie to seadoo]

The fuel/water separator is where the feed line to the carbs runs from. It’s usually in the front of the ski, but I’ve never dig into the newer XP hull, so I can’t confirm that. If you have one plug clean, you’ve got more going on than just an air leak at the separator. You’re probably going to have to pull the carbs again and double check everything. Is it the mag side or the pro side that’s not firing?

I just found that my exhaust clamp was loose could that be the problem?

 

[mikidymac]

Yes, if it is dumping exhaust into the hull it is starving for oxygen.

 

[Newbie to seadoo]

Ohh okay I’ll take it to the lake and see if that helps

 

[mikidymac]

If it's the big stainless band clamp you should take it apart and clean the surfaces and copper ring and reseal with Ultra Copper RTV.