I have the 99 GTX. It has the 951. First thing is don’t ever run them if their carbs aren’t fully functioning. You have a very good chance of blowing the engine. It is easy to rebuild them completely. Always use genuine Mikuno parts. Your Seadoo sounds like it isn’t running right at the high end RPMs. Clean the carbs, then check the water valve into the muffler. Check your rave valves. I don’t hear them engaging. You will hear a big, quick jump in RPMs when they engage. After I blew my first engine not knowing any better, I have had 3 great years with it. But you gotta know what you are doing or you will waste a ton of money! Good luck!
We need to rebuild the carb completely or buy a new one and redo the fuel lines. It quit running on us and fouls plugs after like 2 minutes of riding lol.
@motovlogunleashed Either the needle/seat was no good, or the low speed jets were too rich. Plugs fouling at low speed are almost always caused by these two. I hope everything turned out alright! Edit: Another thing to look out for - if it's dying after completely letting off of the throttle while at speed, then the little plastic check valves in the carbs need to be replaced. Make sure that you don't put them in backwards. Just reference a mikuni carb rebuild video for one of these motors and you'll get it.
Just picked up a 2001 GTX $200.oo the guy said the exhaust an throttle body plus little wiring needed finished. Yep waterlogged my 787 rfi. Having been in automotive mechanics half my life decided to pull the head. Wow..1.00 stamped on pistons. New gaskets and it fired right up gotta love fuel injection. Rebuilding pump, new carbon seal w boot,cone on drive shaft side of impeller and both 2 I found out driveshaft bumpers.was missing the one at flywheel end. Shaft showing bad wearing on other end. Rubber pushing shaft away from pump I believe.waiting for parts so I can get it wet. Wanting to hear an feel that 1 mm. Over bore beneath me .if she runs out way I'm expecting then I'll tear it down and ring her. Then I'll spend the $200 with SBT for a new shaft. Oh yeah the engine is a SBT built also. 11-2023
This thing has like 230 something hours on original parts. I think it’s nearing its end. The last time I had it out I was flying full throttle across the lake then it just died. I tried swimming it to the marina but didn’t work so I had to crank it the entire way back. Surprised I didn’t burn up the starter but when I got back and took the seat off smoke was bellowing out of the engine compartment. Ground wire on the battery was slightly melted. Something going on. I hinestly hate the old two strokes and might break down and buy a new spark trixx. They look like a lot of fun but people complain about routine maintenance being difficult but it can’t be more difficult then maintaining a clapped out 90s 2 stroke PWC. Lol
I adjusted the carb to factory settings, I got it to where it will idle, but still running rough. I got my speed to 54mph now. Going to be replacing fuel lines, and redoing the carb again and see how it goes. Gona be a good winter project. I put seafoam in it and now it runs really bad, wont go over 10mph right now. Im assuming it broke some gunk loose in the fuel lines and sent it to the carb.
If it's a 787 it isn't going to do 60mph. My 96 spx (x4) does 55 with a 717 and less than 5 gals in the tank, but Im pretty sure those can do pretty much the same thing. The weight of the rider will matter too, as well as how much gas you have. Every pound counts that's why with a passenger you're doing high 30's.
This one has the 951 in it! It just started running really bad. I’m guessing it’s the intake. It seems to be missing parts on it and it’s getting too much air would be my guess. The clips that hold it on are gone and it was zip tied on. It was someone’s river rat jet ski I’m guessing.
Just picked one up completely rebuilt 5hrs on it. Thanks for sharing your journey.
I have the 99 GTX. It has the 951. First thing is don’t ever run them if their carbs aren’t fully functioning. You have a very good chance of blowing the engine. It is easy to rebuild them completely. Always use genuine Mikuno parts.
Your Seadoo sounds like it isn’t running right at the high end RPMs. Clean the carbs, then check the water valve into the muffler. Check your rave valves. I don’t hear them engaging. You will hear a big, quick jump in RPMs when they engage.
After I blew my first engine not knowing any better, I have had 3 great years with it. But you gotta know what you are doing or you will waste a ton of money!
Good luck!
this ski did end up blowing, because somewhere along the line, someone put regular gas with no oil in it. Searching for something new slowly lol
I’ve got a 98 gtx limited. Just rebuilt the engine and carbs. I got 94kph which is around 60 mph
We need to rebuild the carb completely or buy a new one and redo the fuel lines. It quit running on us and fouls plugs after like 2 minutes of riding lol.
@motovlogunleashed Either the needle/seat was no good, or the low speed jets were too rich. Plugs fouling at low speed are almost always caused by these two. I hope everything turned out alright!
Edit: Another thing to look out for - if it's dying after completely letting off of the throttle while at speed, then the little plastic check valves in the carbs need to be replaced. Make sure that you don't put them in backwards. Just reference a mikuni carb rebuild video for one of these motors and you'll get it.
Excellent microphone quality! Looks like a good lake to ride.
Thanks a lot! I have a video on the mic setup as well. Lake is amazing. Our channel is the only part I’m not the biggest fan of
Just bought a 2000. Need to learn a lot.
Just picked up a 2001 GTX $200.oo the guy said the exhaust an throttle body plus little wiring needed finished. Yep waterlogged my 787 rfi. Having been in automotive mechanics half my life decided to pull the head. Wow..1.00 stamped on pistons. New gaskets and it fired right up
gotta love fuel injection. Rebuilding pump, new carbon seal w boot,cone on drive shaft side of impeller and both 2 I found out driveshaft bumpers.was missing the one at flywheel end. Shaft showing bad wearing on other end. Rubber pushing shaft away from pump I believe.waiting for parts so I can get it wet. Wanting to hear an feel that 1 mm. Over bore beneath me .if she runs out way I'm expecting then I'll tear it down and ring her. Then I'll spend the $200 with SBT for a new shaft. Oh yeah the engine is a SBT built also. 11-2023
This thing has like 230 something hours on original parts. I think it’s nearing its end. The last time I had it out I was flying full throttle across the lake then it just died. I tried swimming it to the marina but didn’t work so I had to crank it the entire way back. Surprised I didn’t burn up the starter but when I got back and took the seat off smoke was bellowing out of the engine compartment. Ground wire on the battery was slightly melted. Something going on. I hinestly hate the old two strokes and might break down and buy a new spark trixx. They look like a lot of fun but people complain about routine maintenance being difficult but it can’t be more difficult then maintaining a clapped out 90s 2 stroke PWC. Lol
I have a 1998 gtx. I was given it and never been on one
@@LloydSegler-te9fg they’re sweet machines but this one blew up shortly after this video. Bottom end had a giant hole blown through it
I’ll be trying this out. I’ll be assuming I’m hitting 50-55mph. 97 gti
I adjusted the carb to factory settings, I got it to where it will idle, but still running rough. I got my speed to 54mph now. Going to be replacing fuel lines, and redoing the carb again and see how it goes. Gona be a good winter project. I put seafoam in it and now it runs really bad, wont go over 10mph right now. Im assuming it broke some gunk loose in the fuel lines and sent it to the carb.
🤟🏼
What lake is that?
All day 54MPH
2001 do 62
You never told us how fast it got up to.
gps speed in mph is on the screen. 5:50 hit 49mph top speed
Kid trying to sell me one says it goes 65 💀💀💀
If the impeller/wear ring/engine are all in top condition, it should do about 60. 65 is out of the question
If it's a 787 it isn't going to do 60mph. My 96 spx (x4) does 55 with a 717 and less than 5 gals in the tank, but Im pretty sure those can do pretty much the same thing. The weight of the rider will matter too, as well as how much gas you have. Every pound counts that's why with a passenger you're doing high 30's.
This one has the 951 in it! It just started running really bad. I’m guessing it’s the intake. It seems to be missing parts on it and it’s getting too much air would be my guess. The clips that hold it on are gone and it was zip tied on. It was someone’s river rat jet ski I’m guessing.
787/800 I guess with the 1mm over its possible. I was told my 01 gtx rfi with 1 mm sleeves in it could as long as pump was in top shape.