Seadoo SPI 96 revs high, low, high, low... after 20 min of use

[Stefane007]

Hi,
I have 2 Seadoo SPI 96. They worked great until this year. I have been using Seafoam to winterize, top up the oil, seafoam in gas with fuel from time to time...
But I have had this issue with both of my seadoos this year.
I start them up, they hesitate a bit because of the cold start.
The seadoos work at full gas and revs fine for a short while.
They work a bit and then while I'm at full gas they start revving low, high, low, high, low, high...
I throttle down and notice that it still does it but the cycle between low and high is slower.

I suspect that this has to do with my older fuel lines and carburator.
Now, before I order 2 carburator rebuild kits, new fuel lines, fuel selector, filter... can anyone confirm if this is what is needed so that they work fine once again?

Thanks, any help is appreciated.

 

[Stevie96xp]

Sounds like there going lean I would do a refresh on the fuel system make sure to buy only oem carb kits

 

[mikidymac]

SeaFoam isn't going to fix anything, you need to service the fuel system and carbs. You are better off with Marine StaBil fuel stabilizer for storage.
Follow the carb rebuild thread.

Thread 'The Seadoo Carb Rebuild Thread'

Apr 11, 2018

So, I know we keep talking about making a How-To thread on rebuilding carbs and never get around to it so last night I decided to finally get-r-done. This will be a work in progress as there are a lot of pictures and text to upload for this so give me a little time. I also welcome any tips and hints that others might have so we can make this as easy as possible for the first timers.

This will work for any of the Seadoo carbs except for the old round body carbs found on the early models and even the Yamaha's.

First off I am going to assume you have removed the carbs and it might not hurt...

• mikidymac
• Replies: 237
• Forum: 2-Stroke Sea-Doo PWC Forum

• 

 

[Stefane007]

Ok. Will order new fuel lines, filter, switch for reserve and fuel, carb rebuild and follow videos to rebuild the fuel system.