5 replies to this topic

[devilshorty]

While out one day i went to power down my sportster to idle for a second and take a break, once finished i started my way back home , and once i gave the throttle over 50 percent power the engine made a noise as if it was over revving and the boat persisted in running at teh same speed not accelerating nor decelerating, i looked in through the intake and wasnt abel to see anything obstructing the flow nor when i pulled off the cover over the driveshaft where you lube the two nipples nothing seemed wrong either. im baffled as to wat could be cause this almost slipping sensation, any ideas?

[gofast]

Check the nut holding the impeller. I have been told by seadoo tech they can loosen .

[devilshorty]

While out one day i went to power down my sportster to idle for a second and take a break, once finished i started my way back home , and once i gave the throttle over 50 percent power the engine made a noise as if it was over revving and the boat persisted in running at teh same speed not accelerating nor decelerating, i looked in through the intake and wasnt abel to see anything obstructing the flow nor when i pulled off the cover over the driveshaft where you lube the two nipples nothing seemed wrong either. im baffled as to wat could be cause this almost slipping sensation, any ideas?

i havnt found a single nut on the shaft but when i took off the sterring nozzle i found a black cone shaped object at the endof the shat which apperas to be a cover for the end.. after removing the three holding bolts i pulled onteh conebut it didnt comeloose i didnt want oull on it to hard so i have just left itat that for nowam i on the rigfht track should i just pull on the cone harder since maybe it was sealed in via a gasket and sealer?

[tiggerman]

What boat do you have? On the standard Seadoo jetpump the impeller is threaded and screws onto the pump shaft- no nuts - unlikely it will come loose.. the over revving you describe could possibly be cavitation/ aeration in the pump. That cone you see holds the pump oil in, and shapes the jetstream leaving the pump. It is sealed. If you were to remove it, besides making a mess, you would find the pump shaft, bearings, etc. The shaft is made on that end where it can be held while the impeller is installed/removed.

[devilshorty]

What boat do you have? On the standard Seadoo jetpump the impeller is threaded and screws onto the pump shaft- no nuts - unlikely it will come loose.. the over revving you describe could possibly be cavitation/ aeration in the pump. That cone you see holds the pump oil in, and shapes the jetstream leaving the pump. It is sealed. If you were to remove it, besides making a mess, you would find the pump shaft, bearings, etc. The shaft is made on that end where it can be held while the impeller is installed/removed.

oh whow thanx im glad i didnt end up getting that off then, so you say air in the pump?? how woudl i solve that then cause im really at a loss, its not making sense to me... oh and i have a 96 sportster

[gofast]

My bad. A thousand apoliges to devilshorty . i was repeating what was told to me after a recent repair to my sportsterscic in which the wear ring was relplaced less than 30 hrs. He said the impeller was loose and viberated. Again I did not mean to missinform.