justin0829
New Member
Hi all! i am new to this forum and have never posted to a forum before so if i violate a guideline please let me know.
Anyways, so i just got a 1994 SeaDoo SPi from a friend the other day for free. It had been sitting under his deck for a couple years and he never got around to fixing it up after it stopped running in 2014. So i took it home and, after doing some research changed out the grey fuel lines and cleaned out the carb. It has a single mikuni carb and is a 2 stroke 587 engine. I did not rebuild it i just cleaned out the internal filter and sprayed the pump and diaphragms out with carb cleaner. Also i took the jets out and checked them for debris. While spraying with carb cleaner i had the o-rings taken out of course. From there i changed out the nasty grey fuel line that was beginning to decompose. I only had enough hose to change out the intake, return, and crankcase vacuum hose. I did not change out any of the vent lines i only did the main ones that go from the fuel selection valve? (whatever switches from reserve to main). I did not know if any of the other hoses were important to change since i don't know anything about jet skis. Once i got all of this finished i choked it and it fired up immediately.
Took it out to test on the lake and somehow when i was unloading the jet ski the drain plug in the back fell out and the engine bay half flooded with water (almost to top of battery). I got it out of the water as soon as i realized and removed the plugs and turned the engine over to remove all the excess water and then started it up and drove it again. Im not sure if this has anything to do with it or not. After removing the water i took it back out again for a test. The jet ski ran wonderful except it bogged just slightly on acceleration from a stop. It ran great for about 5-7 minutes (i guess?) and then kept trying to stall on me. It would begin to stall and if i just held the throttle wide open it would slowly come back to life and run great. After a minute or so it died completely no matter how much i opened the throttle. It would not fire back up unless i choked the engine and spun it over a few times. It would not crank while choked either. I had to choke it and turn the engine over a few times with the starter. After that if i tried to start it i would have to give it about 1/2 throttle or more and it would slowly come to life and run great for another minute or so. I did this a couple more times and even tried to run it on reserve instead of main in case the fuel selection valve was gummed up. No luck.
Sorry for this being so long and in depth but i thought more information would be better than none. Any help would be very very much appreciated. Thanks!!
Anyways, so i just got a 1994 SeaDoo SPi from a friend the other day for free. It had been sitting under his deck for a couple years and he never got around to fixing it up after it stopped running in 2014. So i took it home and, after doing some research changed out the grey fuel lines and cleaned out the carb. It has a single mikuni carb and is a 2 stroke 587 engine. I did not rebuild it i just cleaned out the internal filter and sprayed the pump and diaphragms out with carb cleaner. Also i took the jets out and checked them for debris. While spraying with carb cleaner i had the o-rings taken out of course. From there i changed out the nasty grey fuel line that was beginning to decompose. I only had enough hose to change out the intake, return, and crankcase vacuum hose. I did not change out any of the vent lines i only did the main ones that go from the fuel selection valve? (whatever switches from reserve to main). I did not know if any of the other hoses were important to change since i don't know anything about jet skis. Once i got all of this finished i choked it and it fired up immediately.
Took it out to test on the lake and somehow when i was unloading the jet ski the drain plug in the back fell out and the engine bay half flooded with water (almost to top of battery). I got it out of the water as soon as i realized and removed the plugs and turned the engine over to remove all the excess water and then started it up and drove it again. Im not sure if this has anything to do with it or not. After removing the water i took it back out again for a test. The jet ski ran wonderful except it bogged just slightly on acceleration from a stop. It ran great for about 5-7 minutes (i guess?) and then kept trying to stall on me. It would begin to stall and if i just held the throttle wide open it would slowly come back to life and run great. After a minute or so it died completely no matter how much i opened the throttle. It would not fire back up unless i choked the engine and spun it over a few times. It would not crank while choked either. I had to choke it and turn the engine over a few times with the starter. After that if i tried to start it i would have to give it about 1/2 throttle or more and it would slowly come to life and run great for another minute or so. I did this a couple more times and even tried to run it on reserve instead of main in case the fuel selection valve was gummed up. No luck.
Sorry for this being so long and in depth but i thought more information would be better than none. Any help would be very very much appreciated. Thanks!!
