Havent had a chance to look at it yet to diagnose, but wanted to get some opinions since Ive already done a lot of work on the fuel systems.
Little background. Bought a couple of blown up 96 GTX's last year and fixed them both up. Replaced all the fuel lines, rebuilt the carbs, cleaned the fuel selectors etc. Both skis ran great last year and first time out this year. Then on of them started not wanting to run over 5000 rpm. Would run fine up to that, then die like it had run out of gas, then pick up and run again just like a fuel supply issue. Figured I had a plugged fuel valve so I purchased new ones to put in both skis. Got to our vacation and wife rode the problem ski the first day, said it had no trouble and was fixed. I rode it the second day and was following a newbie around on my other ski so was just puttering under 5k without problem, but as soon as I did try to speed up it started doing the same thing. I parked the ski for a couple of days and then decided to take it out to do a little more diagnosis on it, and this is where Im starting to lean toward a rectifier problem. As I said, the entire fuel system has been replaced, a new filter in the line and the pickup/float assembly was even removed, float repaired and reinstalled and now a new fuel selector valve.
If you gun it to full throttle, it will initially shoot to 7k rpm, but then die, rpm will drop down to around 2500 and then it picks back up. Again, this does sound like a fuel supply problem, but, then I was crusing around just under the 5k limit where it seems to happen and the ski jumped a small wave and the pump freewheeled. The instant the engine went over 5k it shut off, dropped to 2500 and then picked back up. I duplicated this same scenario several times, and each time the pump comes out of the water and the rpm goes above 5k it will shut off. Now Im not so sure it is a fuel issue, but is instead an electrical issue, more than likely the rectifier from other posts I have read. Opinions?
Little background. Bought a couple of blown up 96 GTX's last year and fixed them both up. Replaced all the fuel lines, rebuilt the carbs, cleaned the fuel selectors etc. Both skis ran great last year and first time out this year. Then on of them started not wanting to run over 5000 rpm. Would run fine up to that, then die like it had run out of gas, then pick up and run again just like a fuel supply issue. Figured I had a plugged fuel valve so I purchased new ones to put in both skis. Got to our vacation and wife rode the problem ski the first day, said it had no trouble and was fixed. I rode it the second day and was following a newbie around on my other ski so was just puttering under 5k without problem, but as soon as I did try to speed up it started doing the same thing. I parked the ski for a couple of days and then decided to take it out to do a little more diagnosis on it, and this is where Im starting to lean toward a rectifier problem. As I said, the entire fuel system has been replaced, a new filter in the line and the pickup/float assembly was even removed, float repaired and reinstalled and now a new fuel selector valve.
If you gun it to full throttle, it will initially shoot to 7k rpm, but then die, rpm will drop down to around 2500 and then it picks back up. Again, this does sound like a fuel supply problem, but, then I was crusing around just under the 5k limit where it seems to happen and the ski jumped a small wave and the pump freewheeled. The instant the engine went over 5k it shut off, dropped to 2500 and then picked back up. I duplicated this same scenario several times, and each time the pump comes out of the water and the rpm goes above 5k it will shut off. Now Im not so sure it is a fuel issue, but is instead an electrical issue, more than likely the rectifier from other posts I have read. Opinions?
