Hello, So I just bought a pair of Seadoo's in June, my first. I'm a car guy in general (VW and Dodge/diesel) so mechanical work is not intimidating to me, especially after working on a VW made after the year 2000. However I am new to carburetors and 2 stroke motors, but find them fascinating to learn about!
My 97 Seadoo GSi (720cc motor) I had just rebuilt the carb (3x), swapped out the grey fuel lines for black auto fuel lines, pressure tested the fuel tank, pop-off pressure in the carb and pressure in the fuel accelerator pump, everything checks out great, holds pressure. I fixed a nagging 'bogging' issue,(Give it any throttle and would surge forward for a second then cut out or barely idle) after finding that one of my ignition coil wires(the retaining clip was snapped off) had vibrated loose. I put it in the water and finally it ran great for the 1st time, and the night before were supposed to leave to go camping. Adjusted/read new spark plugs for as clean/efficient as possible running at least, only slight carbon build up on brand new plugs.
Two days later on our camping trip, after an hour or two out on the lake, running at a max RPM of 6200, and half a tank of gas later, the max RPM's that the Ski will reach is slowly drifting downward by about 50-100 rpm's per minute at WOT, running until it seemed to level off around 3600-3800. Tried letting the ski sit for a while, and run again, and wont get up past 4000 RPM without dropping back down to about 3700 RPM's. I re-checked the coils and they are staying connected, fuel pressure/carb working fine from what I can tell. I'm stumped as to what this what point to/where to start troubleshooting and my wife refuses to go out on them anymore as she's tired of getting towed in by our local Sherriff, who now knows us on a first name basis, depressing. Any ideas?
My 97 Seadoo GSi (720cc motor) I had just rebuilt the carb (3x), swapped out the grey fuel lines for black auto fuel lines, pressure tested the fuel tank, pop-off pressure in the carb and pressure in the fuel accelerator pump, everything checks out great, holds pressure. I fixed a nagging 'bogging' issue,(Give it any throttle and would surge forward for a second then cut out or barely idle) after finding that one of my ignition coil wires(the retaining clip was snapped off) had vibrated loose. I put it in the water and finally it ran great for the 1st time, and the night before were supposed to leave to go camping. Adjusted/read new spark plugs for as clean/efficient as possible running at least, only slight carbon build up on brand new plugs.
Two days later on our camping trip, after an hour or two out on the lake, running at a max RPM of 6200, and half a tank of gas later, the max RPM's that the Ski will reach is slowly drifting downward by about 50-100 rpm's per minute at WOT, running until it seemed to level off around 3600-3800. Tried letting the ski sit for a while, and run again, and wont get up past 4000 RPM without dropping back down to about 3700 RPM's. I re-checked the coils and they are staying connected, fuel pressure/carb working fine from what I can tell. I'm stumped as to what this what point to/where to start troubleshooting and my wife refuses to go out on them anymore as she's tired of getting towed in by our local Sherriff, who now knows us on a first name basis, depressing. Any ideas?
