97 Gsx 787 Misfire at half throttle

[busta]

I don't see the washer on that parts list, was it something that was added at a later date?

 

[mikidymac]

It is just one of the standard seadoo stainless washers as far as I know. I don't have my 1997 GSX at the house so I can't check it at the moment.

 

[jjsinaz]

I had the ski out yesterday and the water regulator leaked like a sieve. Pulled it apart and did find what appeared to be a tiny hole in the bellows, but I think most of the water was coming out because of the missing o-ring. Still ran about the same way too. So, I went to the hardware store this morning and bought an o-ring that seems to fit well and also an o-ring that serves the purpose of the zip tie for the bottom of the bellows. Sealed the very tiny hole in the bellows with black RTV. Although it appears that the o-ring on the valve spool does not need to be there, I don't see any harm in having one there and frankly I don't see how you can keep it from leaking without it. Perhaps most of the valve spools fit tighter into the housing, that's why you have to use some force to pull them out. Mine was not a tight fit, but the o-ring seems to have solved that issue

 

[mikidymac]

Good to know.

I know there are some experts here that have messed with them over the years and have come to the conclusion that some housings warp and can't be fixed so you have to replace them. It is such a simple device but there is so much mystery to them so I am not sure the o-ring on the spool is a fix or not.

 

[jjsinaz]

Well let's see how it works out. I'll keep you guys posted

 

[rawdog2386]

Well let's see how it works out. I'll keep you guys posted

How did it go? Im having the same issues and was planning on grabbing an o-ring also.