schp98ls1b4c

i bought a 1988 jet ski 550 from my co worker super clean but it starts 10 seconds and turns off the fuel lines are all 100% stock even has stock rev box on the fuel lines. i disconnected the main fuel line on the carb i blew into the tank and i hear a leak and its not coming from the check valve sounds like the rubber seal under the pick up hoses but i cant figure it out??? is this why my ski doesnt stay on im for sure there is no pressure in the fuel system because of this leak

motoman96

fix the leak and try it again.....

Davenjw

how does it run before it dies? does it die even if your playing with the throttle? how easy is it to start up after it dies?

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My ski:

1986 Kawi X-2

750 fresh, blaster chamber, 46mm sbn, aluminum fuel tank, supertrapp waterbox, full steering mods, etc.

schp98ls1b4c

it sounds good!!! before it dies thats how i keep it on by playing with the throttle wide open it stays on and it starts pretty easy after it dies just have to pull the choke and hold the it wide open

Davenjw

rebuild the carb. not even with a rebuild kit if you don't want to mess with it at first, just tear it all apart, clean it, and put it back together. make sure everything looks clean and pretty. these should idle all day if you want them to.

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My ski:

1986 Kawi X-2

750 fresh, blaster chamber, 46mm sbn, aluminum fuel tank, supertrapp waterbox, full steering mods, etc.

schp98ls1b4c

no pressure in the system wont affect it???

rotaryboots

the carb has a fuel pump built in which supplies the fuel. The tank is supposed to be air tight to keep water out but I don't think it has to be air tight for the engine to run. You could probably take the fuel cap off and it would still start and run no different.

jhchgross

Rebuild-clean carb, rebuild preferrably with a new needle and seat. The pressure is not an issue the system does not use pressure to feed the carb, but still check that leak anyway for other obvious reasons like water getting in.

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1989 X2 1.5 chop, custom waterbox, custom made steering, 44SBN,westcoast exhaust, bored exhaust manifold, 15.5° skat, custom freestyle cone, JSS plug wire upgrade, #zero lightened flywheel, reed stuffers, Steer Clear steering mod
1990 JS 550 SX 15° skat, milled head, bored nozzle, mariner ride plate, half pipe and water box, custom intake grate, 44bn, turfed everything, custom stainless fuel pickup, JSS plug wire upgrade, Seadoo 580 starter spins superfast.

jdp8488

mine did exactly that when i first got it, just took the carb apart, cleaned everything up, took all the needles out, sprayed carb cleaner in the holes, put them to stock settings, then bam, runs perfect..

StandUpGuy23

just so you know, carb rebuild kits will cost roughly $40-45. Needle and seat will cost another $10. This will save you a lot of hassle come summer. Just as all of us have already learned you need to rebuild as much as possible before summer so that you can spend your days riding rather than wrenching.

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JS550/650 conversion- ported (exhaust ports widdened 2mm, raised 1mm, transfers stair stepped, cases ported), Blackjack 46mm, Prok FA, Boysen reeds, stuffers, Westcoast head 30cc domes (175psi), Jetinetics charging flywheel, Dale's Bad Attitude Ignition, PJS exhaust manifold, Factory Performance Pipe, Coffmans Waterbox, footholds, Team Waterfly Tubbies.

650 pump conversion- SXR prop cut to fit 650 pump repitched to a 9/17, TBM pump stuffer, OP nozzles, and OP skegged ride plate.