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  1. The counter balance shaft compartment is sealed...

    The counter balance shaft compartment is sealed and isolated from the crank/crankcase. This would not be effected by the water intrusion.
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    I know this has been a while, but I had a similar...

    I know this has been a while, but I had a similar issue and mine turned out to be fuel flow. There was insufficient fuel making it to the PTO carb. Ski would run on both cylinders and as you...
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    I'm sure you are correct on something I have...

    I'm sure you are correct on something I have wrong. I'm just thankful to be able to use the thing after spending so much time working on it. I ordered a new pump and there really isn't much to mess...
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    Not sure what you mean by "Not sure where you are...

    Not sure what you mean by "Not sure where you are getting "many PTO failures" from?...Does it not make sense that the PTO cylinder would have more failures from a fuel delivery standpoint. The MAG is...
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    After tons of different test, a low pressure...

    After tons of different test, a low pressure electric fuel pump has fixed the issue for now. For some reason, maybe residual fuel in the crankcase(was seeing a small amount thru the clear diaphragm...
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    I hope someone who knows more will chime in also....

    I hope someone who knows more will chime in also. The thing that makes me think it's not is that this is only reving up to maybe half throttle and if the stream is say 100% at say idle, it's only...
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    So after replacing fuel lines with clear hose....

    So after replacing fuel lines with clear hose. Installed a new pump and checked diaphragms. No bubbles at all from the tank to the carb. No bubbles from pump to PTO carb outlet. Very little fuel...
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    FL_Rider, Thanks for your reply. I did not use...

    FL_Rider, Thanks for your reply.

    I did not use clear hose when I did the test from the Mag pump nipple to check for air bubbles. I will definitely try clear hose and look for bubbles. Am I correct...
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    951 Carb issues

    After many trials and tribulations, I've figured out what my RX 951 problems are. Symptoms were that the ski would run up to 3700 rpms and then the PTO cylinder would shut down. Well after adding a...
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    Is this a correct assumption that the...

    Is this a correct assumption that the counterbalance cavity should be sealed off from the rest of the crankcase? If so, do you test this by leaving the fill plug out? Should a test with the fill plug...
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    951 Leak Test

    Should a top/bottom end leak test on a 951 be done with or without the counterbalance fill plug in? I don't see any mention of this in the service manual. It seems the counterbalance chamber should...
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    So I tore apart and resealed. Everything looked...

    So I tore apart and resealed. Everything looked fine. I'm still losing air thru the counter balance shaft cavity. I know there is no way to test but would this point to bad inner seals on the crank...
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    Well I didn't realize Bill O'Neil had passed...

    Well I didn't realize Bill O'Neil had passed away. It was from one of his post I believe. Just a thought.
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    That is my plan....thanks again for all the...

    That is my plan....thanks again for all the suggestions. Just one more unorthodox question for those that have a lot of 951 experience. Is there enough pulse from the crank to pump a fuel pump on the...
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    So I think I do have a leak. I didn't do this...

    So I think I do have a leak. I didn't do this last evening, but thought about checking today when I could get the motor tilted enough to get to the bolt. I removed the oil reservoir bolt for the...
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    Jumped the gun on the leak. Forgot to...

    <EDIT> Jumped the gun on the leak. Forgot to block off the RAVE's....holding 5lbs for 15+ minutes now.
    I guess I'll go ahead and pull it and take a look at the stator and pick-up. If it were pick-up...
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    I tried a few more things today including paying...

    I tried a few more things today including paying closer attention to misfiring and when it was doing it. I tried swapping the coils again with no luck. The grounds in the rear black box (3 black...
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    I have tried new spark plugs (4-5 sets with this...

    I have tried new spark plugs (4-5 sets with this one issue) and swapped the coils. A mechanic just let me borrow a little device that test how far a spark will jump to maybe see if the spark is...
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    Thank you, but I've had the cages physically out...

    Thank you, but I've had the cages physically out and inspected. Seem very normal, nothing out of sorts. I think rather than thinking electrical, I'm going to pull the motor and pressure check it....
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    I have checked them twice. They look fine. Could...

    I have checked them twice. They look fine. Could an air leak cause one cylinder not to fire once pressure builds?....tried going out today and ran with and without the air breather. Adjusted from one...
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    I've rebuilt them twice with new OEM Mikuni...

    I've rebuilt them twice with new OEM Mikuni kits....Pop-off checked at 20 psi and needle/seat holds after pop-off. I fear I'm doing something wrong on the PTO carb. It's basically the same except w/o...
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    It's a 2001....with 2 coils. I was afraid of...

    It's a 2001....with 2 coils. I was afraid of that. Just trying to verify whether an issue is electrical. I lose the PTO cylinder at approx. 3500 RPM's...cylinder and spark plug are wet. PTO cylinder...
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    Seadoo 951 Electical Issue

    Can someone tell me if you can swap spark plug wires to see if an issue moves to the other cylinder on a 951 carb ski? I suspect electrical but this would verify it.

    Thanks
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    Seadoo 951 Electical Issue

    Can someone tell me if you can swap spark plug wires to see if an issue moves to the other cylinder on a 951 carb ski? I suspect electrical but this would verify it.

    Thanks
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    I have a similar issue except mine is a 01 RX...

    I have a similar issue except mine is a 01 RX with a 951 and it's bogging quicker at about 3000-3500 rpms. I know it is the PTO cylinder. Once the bog starts I can pull the PTO plug wire and nothing...
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