Just got a couple of boats, what are the must dos?

[eric_fri]

I just got a couple of boats and I'm wondering what are the must dos for maintenance and repairs. One is a 96 SPX and the other is a 96 GTX. Both start and run great on the trailer and I saw them on the water last year.
I’ve already rebuilt the pump on the GTX, new bearings, seals, wear ring, etc… They both have the grey Tempo lines which I plan to replace as well as rebuild the carbs. What else should I check over to ensure things run great?

Chers,
Eric

 

[Stevie96xp]

I just got a couple of boats and I'm wondering what are the must dos for maintenance and repairs. One is a 96 SPX and the other is a 96 GTX. Both start and run great on the trailer and I saw them on the water last year.
I’ve already rebuilt the pump on the GTX, new bearings, seals, wear ring, etc… They both have the grey Tempo lines which I plan to replace as well as rebuild the carbs. What else should I check over to ensure things run great?

Chers,
Eric

Hey if they run good the change the lines and I would rebuild the carb but make sure to use only oem Mikuni carb kits ask my how I know. And I would change out the oil injection lines because if they brake it’s a motor rebuild and I would flush the oil in the injection tanks that way you know what kind of oil is in there. Also clean the raves on the gtx the spx doesn’t have any other than that they should be good to go for a couple years before you have to do any maintenance. Those are both great skis definitely be a lot of fun

 

[eric_fri]

make sure to use only oem Mikuni carb kits

This I know. I also have a 91 Superjet and it has the same carb.

And I would change out the oil injection lines because if they brake it’s a motor rebuild and I would flush the oil in the injection tanks that way you know what kind of oil is in there.

Good call. I’m so used to premixing the injection is foreign to me. I don’t trust it yet.

Also clean the raves on the gtx

I haven’t heard of those, I’ll look it up.

Thanks for the tips!

 

[Stevie96xp]

This I know. I also have a 91 Superjet and it has the same carb.

Good call. I’m so used to premixing the injection is foreign to me. I don’t trust it yet.

I haven’t heard of those, I’ll look it up.

Thanks for the tips!

Yeah man no problem on the seadoos you have to run oil in the tank so that it loobs the rotory vale gear. Even if you’re running premix. The injection pumps are very reliable the pumps never fail. The lines do. The pumps on other brands like Yamaha and Kawasaki do but every single person on that I have heard of has never had a Seadoo pump fail. But whatever you feel comfortable with. Good luck

 

[DaddyLoafin]

by any chance does OP part out Yamahas? There's a guy kind of local to me that parts out wave runners with the same name.

 

[mikidymac]

Also make sure you use the proper API-TC oil in the Seadoo's, not the yamaha TCW-2.

 

[eric_fri]

by any chance does OP part out Yamahas? There's a guy kind of local to me that parts out wave runners with the same name.

Not me. I prefer to put them together instead of parting them out

 

[eric_fri]

Also make sure you use the proper API-TC oil in the Seadoo's, not the yamaha TCW-2.

I use TCW-3 oil only. What are your thoughts on that for the Seadoos?

 

[2strokeboy]

Not good for seadoos use API-TC only if you don't wanna spend so much on them get some lucas 2 stroke oil that is API-TC rated. Lucas oil

 

[DaddyLoafin]

Not me. I prefer to put them together instead of parting them out

lol i feel you.

 

[eric_fri]

lol i feel you.

That's why I've spent way more than the boat is worth on my '91 Superjet.

 

[eric_fri]

Not good for seadoos use API-TC only if you don't wanna spend so much on them get some lucas 2 stroke oil that is API-TC rated. Lucas oil

Thanks, I will remember this.

 

[DaddyLoafin]

That's why I've spent way more than the boat is worth on my '91 Superjet.

hahaha im in the same boat with my 98 spx. Easily have double what its worth into it, but my god its so much fun

 

[etemplet]

lol i feel you.

Me Three. I am the Seadoo 2-stroke resurrector. Some of them do not appreciate me and fight me all the way... like this speedster. It finally succumbed to my repeated attacks and ceaseless onslaught. It's almost friendly now. LOL

 

[eric_fri]

I finally got my SeaDoos on the lake, only be very disappointed in their performance. I know these boats, they've been in the family for many years, but they've sat in the garage for the past few and now I've inherited them, only to find that they have a number of issues.

I would greatly appreciate any help anybody can offer in troubleshooting the issues.

They are both 1996, one is a GTX and the other is an SPX.

What I have done for the GTX, and what it's doing now.
- I have rebuilt the carbs with genuine Mikuni kits. Coming from the Superjet world, this isn't new to me.
- Replaced all of the fuel lines and filters.
- Replaced the wear ring.
- Replaced the bearings in the pump.
- Cleaned the RAVE vales.

The engine starts and runs nicely, and I don't have any complaints about how the engine is running, but the pump seems to be the problem. At mid-high to high throttle the pump cavitates REALLY badly. At low-medium to medium throttle it doesn't seem to cavitate, but it does seem to be underpowered. It feels like a pump issue, but I don't know enough about the SeaDoo pumps to say what the issue is.

The SPX hasn't had as much done.
- Fresh carb rebuilds and fuel lines.

Again, the engine starts and runs nicely but there is NO power. It almost feels like the splines on the pump have stripped or something. I'm sure I will have to take it apart to really see what's going on. But, when it's in the water I can clearly see a stream of water coming from the pump, but it has NO power. The engine will increase in RPM but you won't go any faster. In fact, you slow down. It's only at idle or barely off idle do you get any power whatsoever.

I'm fully expecting to have to take both pumps apart, but what should I be looking for? Is it possible there is an air leak into the pump? Any tips or pointers would be greatly appreciated!

 

[2strokeboy]

definitely check wear ring and impeller

 

[Stevie96xp]

I finally got my SeaDoos on the lake, only be very disappointed in their performance. I know these boats, they've been in the family for many years, but they've sat in the garage for the past few and now I've inherited them, only to find that they have a number of issues.

I would greatly appreciate any help anybody can offer in troubleshooting the issues.

They are both 1996, one is a GTX and the other is an SPX.

What I have done for the GTX, and what it's doing now.
- I have rebuilt the carbs with genuine Mikuni kits. Coming from the Superjet world, this isn't new to me.
- Replaced all of the fuel lines and filters.
- Replaced the wear ring.
- Replaced the bearings in the pump.
- Cleaned the RAVE vales.

The engine starts and runs nicely, and I don't have any complaints about how the engine is running, but the pump seems to be the problem. At mid-high to high throttle the pump cavitates REALLY badly. At low-medium to medium throttle it doesn't seem to cavitate, but it does seem to be underpowered. It feels like a pump issue, but I don't know enough about the SeaDoo pumps to say what the issue is.

The SPX hasn't had as much done.
- Fresh carb rebuilds and fuel lines.

Again, the engine starts and runs nicely but there is NO power. It almost feels like the splines on the pump have stripped or something. I'm sure I will have to take it apart to really see what's going on. But, when it's in the water I can clearly see a stream of water coming from the pump, but it has NO power. The engine will increase in RPM but you won't go any faster. In fact, you slow down. It's only at idle or barely off idle do you get any power whatsoever.

I'm fully expecting to have to take both pumps apart, but what should I be looking for? Is it possible there is an air leak into the pump? Any tips or pointers would be greatly appreciated!

Sounds like your pumps have some problems I would check your impeller also a really bad carbon seal can cause that problem