CDM1955
New Member
Forum,
Please forgive me if I am not posting this in the correct section. I have seen Cavitation threads on here and some are closed and I have done the two fixes but still experiencing problems. I am new but have seen and used much of the advice here and am very grateful.
Here is what I own:
• 1997 SeaDoo Sporster single engine Rotax 85hp motor.
• Bought used a month ago so I could give to son.
• Starts and runs but the gas is old and still has the separate oil tank.
• I was going to empty fuel but it is topped off and I have no way of getting rid of that much gas so I put a gasoline stabilizer in the fuel.
Week one:
• Took the boat to local lake and she fired up but rpm is high then settles down after a minute.
• Left the dock where through the no wake zone. When I brought the throttle up it just reeved the motor with very little forward movement.
• Took it back and order a wear ring, brand new stainless impeller, shaft bearings and seals. (Thanks for the freezer trick for the wear ring it worked great.
• Wear ring was bad a lot of clearance. Impeller had some dings in it, oil was stinking and less than half full. Shaft was OK but I wanted to replace everything including the needle bearings and seals.
• Slapped it all back together.
Week Two:
• Same lake put boat in and started up just to notice water gussing in around the boot.
• Took it back out and went on the forums and I ordered a complete shaft rebuilt kit less the shaft since the shaft splines were fine and shaft appeared true.
• Ordered new parts and replace accordion boot all three O rings, carbonite, and carrier bearing (believe what they are called and the front boot.
• My carbon piece was scarred badly and the boot was hard on both ends.
Week three:
• Same lake put boat in started right up no leaks. Did notice the carrier bearing moving about a 1/16 inch in a vibrating motion.
• When I went to use full throttle at this time it almost got on plane before what felt like it was flooding. I believe if I had not backed down on throttle it would have died.
• Back to the dock called a good friend of mine up north that works on outboards and he said sounded like a carburation issue and I should have them rebuilt.
• I had another person tell me it is the neoprene seal between the outside drive unit and the hull and I should use a silicone to seal.
• Previous owner bypass the key unit and just installed what look like a simple clamp under the dash. Someone said that it is not activating the learning or junior mode??
I did not mine doing all the other stuff since I believe it needed it. I do not however want to continue to replace everything on the boat till it works. This is what is called a parts changer and not a mechanic. I can rip a Harley apart and put it back together blindfolded but this has be baffled. Your help is greatly appreciated in advance.
Please forgive me if I am not posting this in the correct section. I have seen Cavitation threads on here and some are closed and I have done the two fixes but still experiencing problems. I am new but have seen and used much of the advice here and am very grateful.
Here is what I own:
• 1997 SeaDoo Sporster single engine Rotax 85hp motor.
• Bought used a month ago so I could give to son.
• Starts and runs but the gas is old and still has the separate oil tank.
• I was going to empty fuel but it is topped off and I have no way of getting rid of that much gas so I put a gasoline stabilizer in the fuel.
Week one:
• Took the boat to local lake and she fired up but rpm is high then settles down after a minute.
• Left the dock where through the no wake zone. When I brought the throttle up it just reeved the motor with very little forward movement.
• Took it back and order a wear ring, brand new stainless impeller, shaft bearings and seals. (Thanks for the freezer trick for the wear ring it worked great.
• Wear ring was bad a lot of clearance. Impeller had some dings in it, oil was stinking and less than half full. Shaft was OK but I wanted to replace everything including the needle bearings and seals.
• Slapped it all back together.
Week Two:
• Same lake put boat in and started up just to notice water gussing in around the boot.
• Took it back out and went on the forums and I ordered a complete shaft rebuilt kit less the shaft since the shaft splines were fine and shaft appeared true.
• Ordered new parts and replace accordion boot all three O rings, carbonite, and carrier bearing (believe what they are called and the front boot.
• My carbon piece was scarred badly and the boot was hard on both ends.
Week three:
• Same lake put boat in started right up no leaks. Did notice the carrier bearing moving about a 1/16 inch in a vibrating motion.
• When I went to use full throttle at this time it almost got on plane before what felt like it was flooding. I believe if I had not backed down on throttle it would have died.
• Back to the dock called a good friend of mine up north that works on outboards and he said sounded like a carburation issue and I should have them rebuilt.
• I had another person tell me it is the neoprene seal between the outside drive unit and the hull and I should use a silicone to seal.
• Previous owner bypass the key unit and just installed what look like a simple clamp under the dash. Someone said that it is not activating the learning or junior mode??
I did not mine doing all the other stuff since I believe it needed it. I do not however want to continue to replace everything on the boat till it works. This is what is called a parts changer and not a mechanic. I can rip a Harley apart and put it back together blindfolded but this has be baffled. Your help is greatly appreciated in advance.
