DuramaxSeaDoo
New Member
Hello everybody, I am new here to the forums and really to PWC's in general. I am a master level mechainc (20 years experience) on everything from a weed eater to a Boeing 777, but ive never worked on floating type of things before lol.
So I will start my story from the begining, I am the director of maintenance/lead mechanic for a land scaping company in northern CO and my boss/the owner bought 2 used 2003 seadoo GTI's with the rotax 718 in both. Well she didnt bother putting them in the lake to test, the guy selling them started them on the stand for a couple seconds to show her they worked and that was about it. So after she purchased them and the weather cleared enough to try them out she put one of the skis in the water and it made it bought half way across the lake before taking a crap, they towed it back to the dock and called me in. When i got there i noticed that it started right up but smoked a bit especially the first couple of seconds after start up, to me its pretty bad but after reading several forums it might be normal i guess lol. I went ahead and checked compression right away and found that both cylinders are at 90psi. Some of the info ive found says that 90's fine some says 90's toast, so i told her i gotta do some digging and see whats up so go ahead and put the other ski in the lake and give it a shot. Well that ski at least went twice as far before crapping out lol. After getting that one back to the dock it was missing and stumbling and then as soon as you hit the throttle it would peter out. I checked compression on the engine and its at 48 psi forward cylinder and aft is at 87. I had her bring the skis to my house and i ordered a manual for them. While waiting for the manual i got in touch with the seller of the skis and this is what he told me they did to them before selling: He replaced the pistons and jugs and gasket set on both skis, he did not touch the carbs except to pull them off and then put them back on. He only ran them for about 20 minutes total time after rebuilding the engines and before selling them.
What ive done so far is to pull the carb off of the first ski and checking the diagphram, its crispy, and now im trying to find a carb kit so i can put the carb back together and see if that helps, it should.
So if anybody has any sugestions, questions, comments or whatever let me know . Just keep in mind I am a master mechanic but im a noob on skis lol.
So I will start my story from the begining, I am the director of maintenance/lead mechanic for a land scaping company in northern CO and my boss/the owner bought 2 used 2003 seadoo GTI's with the rotax 718 in both. Well she didnt bother putting them in the lake to test, the guy selling them started them on the stand for a couple seconds to show her they worked and that was about it. So after she purchased them and the weather cleared enough to try them out she put one of the skis in the water and it made it bought half way across the lake before taking a crap, they towed it back to the dock and called me in. When i got there i noticed that it started right up but smoked a bit especially the first couple of seconds after start up, to me its pretty bad but after reading several forums it might be normal i guess lol. I went ahead and checked compression right away and found that both cylinders are at 90psi. Some of the info ive found says that 90's fine some says 90's toast, so i told her i gotta do some digging and see whats up so go ahead and put the other ski in the lake and give it a shot. Well that ski at least went twice as far before crapping out lol. After getting that one back to the dock it was missing and stumbling and then as soon as you hit the throttle it would peter out. I checked compression on the engine and its at 48 psi forward cylinder and aft is at 87. I had her bring the skis to my house and i ordered a manual for them. While waiting for the manual i got in touch with the seller of the skis and this is what he told me they did to them before selling: He replaced the pistons and jugs and gasket set on both skis, he did not touch the carbs except to pull them off and then put them back on. He only ran them for about 20 minutes total time after rebuilding the engines and before selling them.
What ive done so far is to pull the carb off of the first ski and checking the diagphram, its crispy, and now im trying to find a carb kit so i can put the carb back together and see if that helps, it should.
So if anybody has any sugestions, questions, comments or whatever let me know . Just keep in mind I am a master mechanic but im a noob on skis lol.