I am having continually issues with cavitation or ventilation on my 1997 gti. It used to cavitate under full acceleration so I did the following. It also struggled to pull a waterskier or wakeboarder up.
Previous owner had put an older style carrier bearing/seals in there, so I replaced with a carbon ring. No Change in performance. All bumpers and grease used in pto to push the shaft back.
Replaced wear ring with OEM seadoo and pump plate seal. No change
While doing wear ring I noticed the metal hub in the plastic pump was loose and knocking back and forth. So replaced with a brass pump. No change
Removed pump shoe (deflector) and resealed. Slight improvement.
The cavitation when accelerating during riding is still slightly there, I can't feel it but can hear the rpm lower slightly during acceleration. It still revs up completely when trying to pull a skier up, but a more experienced rider can get up eventually .
My 94 sp with a 580 has no problem pulling up a skier however it has a solas impeller.
I am unsure where else to look at this point. The impeller has some very small knicks on it but is in fairly good condition.
Anything else to look at before I consider an impeller or is it in the nature of this machine.
Thanks for any help.
Previous owner had put an older style carrier bearing/seals in there, so I replaced with a carbon ring. No Change in performance. All bumpers and grease used in pto to push the shaft back.
Replaced wear ring with OEM seadoo and pump plate seal. No change
While doing wear ring I noticed the metal hub in the plastic pump was loose and knocking back and forth. So replaced with a brass pump. No change
Removed pump shoe (deflector) and resealed. Slight improvement.
The cavitation when accelerating during riding is still slightly there, I can't feel it but can hear the rpm lower slightly during acceleration. It still revs up completely when trying to pull a skier up, but a more experienced rider can get up eventually .
My 94 sp with a 580 has no problem pulling up a skier however it has a solas impeller.
I am unsure where else to look at this point. The impeller has some very small knicks on it but is in fairly good condition.
Anything else to look at before I consider an impeller or is it in the nature of this machine.
Thanks for any help.