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my 02 seadoo gtx di will not go over 26mph need help

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xstalian

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i have bought the jetski with out a motor i had a local shop put in the motor and they can not figure out whats going on with it. the ski will not go over 26 mph the ski had great take and but it tops out at 26 mph so i shot a video of me staring it and when i start it the rpms just up and down on there own, and i also revved it up so you can see what im working with please help


https://www.youtube.com/watch?v=LDjUWXjM0U8
 
What color is the float on your key? I am wondering if you have a learner key, it will limit how fast you can go. I think your model can have a learner key programmed to that
 
little bit unrelated to the question, but i was just wondering if you pay a shop to put it in, and it is only able to go like 1/3 the speed, do you still have to pay them? best of luck though, I have no idea, also curious did you rev it to the max at 5K rpm? is that normal, cause my gsx gets 7K rpm i think
 
that's terrible :( sorry to hear that, i understand they should get paid for their work, but they should also be fixing it to get it right without charging extra
 
Whats the gauge saying when you hit 5000 rpm. Looks like it is flashing some kind of warning.

Sounds like it is hanging on the Rave valves. There should be a small black hose going to each Rave housing. Trace those back and you will find a solenoid that lets crank case pressure through to open the valves. First make sure all the hoses are connected. Should be one going to each rave housing and one going to the crank case. If all is good with them unplug the harness to the solenoid and check itwith a multimeter or test light. Start the ski and you should have 0 volts at idle. Rev it up and you should get 12 volts around 4500 rpm to 5000 rpm. Atleast thats how the RFI works and i'm assuming the DI is the same or similar. If you do get 12 volts unhook the ski's battery, find a set of test leads, and hook the battery directly to the solenoid itself. You should hear a click and you should be able to blow into the side coming from the crank case and it should direct the pressure towards the rave valves.
 
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Looks like the ski is in limp home mode to me. MAINT flashing on screen and limiting RPM to 5000. Could be a faulty sensor, (there are many on the di) Bad voltage rectifier etc. Prob best to send it to a shop that has a BUDS diagnostics to find out what exactly is putting the ski into limp home mode.

Are you getting beeps with the flashing red light? If so, and you have access to a manual, there is a page in there with beep codes. Different beeps at different time intervals can narrow the problem down to a few items. You really need a manual if you own a di. They are complicated and finicky. I am always working on mine and I would be stumped without my manual.

Just a thought, check all the wiring looms to make sure everything has been connected back to the engine correctly after the engine install. Rave solenoid, Mag cover connections, Air injectors, fuel injectors. etc..... Check every plug.
Could be as simple as a plug hasn't been connected up.
My xpdi has only gone into limp home mode once. Turned out to be the voltage regulator which is a common thing to break on the di's as well as the overpriced fuel pump module. Good luck!!
 
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I think I'm hearing a metallic sound and I'm wondering if the shop that you had install the motor aligned it. Also is this a new re-manufactured motor or just a used one? 951's need rebuilding around 200hrs. if it's used it could need rebuilding, check the compression, it should be around 135psi.

DI's are very hard to diagnose, your best bet is to take it to a SeaDoo dealer and them run a diagnoses on a buds system.

Lou
 
Looks like the ski is in limp home mode to me. MAINT flashing on screen and limiting RPM to 5000. Could be a faulty sensor, (there are many on the di) Bad voltage rectifier etc. Prob best to send it to a shop that has a BUDS diagnostics to find out what exactly is putting the ski into limp home mode.

Are you getting beeps with the flashing red light? If so, and you have access to a manual, there is a page in there with beep codes. Different beeps at different time intervals can narrow the problem down to a few items. You really need a manual if you own a di. They are complicated and finicky. I am always working on mine and I would be stumped without my manual.

Just a thought, check all the wiring looms to make sure everything has been connected back to the engine correctly after the engine install. Rave solenoid, Mag cover connections, Air injectors, fuel injectors. etc..... Check every plug.
Could be as simple as a plug hasn't been connected up.
My xpdi has only gone into limp home mode once. Turned out to be the voltage regulator which is a common thing to break on the di's as well as the overpriced fuel pump module. Good luck!!



Good point I forgot about limp mode. Just looked in the manual and it said rpms are limited to 2500 rpm or 5000 rpm depending on the fault.
 
1. are there any errors or messages on the screen when it's running?
2. what is the RPM at Wide Open Throttle IN THE WATER?
3. what will it rev to OUT of water (carefully, and only momentarily)
4. fresh fuel?
5. the MPH isn't an issue until we know it's running right.
6. the 951 rev limiter is set at 7,200 +_ 100, it will hold 7K WOT in the water, when running right.
 
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