Super Jet somethings wrong with my ski. cant figure it out
- Thread starter rossthaboss11
- Start date
- Location
- CT
yea im starting to lean away from electrical. i cleaned the carbs a month ago including the internal fuel filters and i have new external fuel filters. If it was not getting fuel wouldnt it have blown up by now? i had to ride it in at about 25% throttle for 10 min to get it back in and ran it on the hose a couple times. im going to run it tomorrow and pull one plug boot, then pull the other one to see if both cylinders are running strong independently. it will run with just the head pipe right? i know it will be EXTREMELY loud. its a factory type 4 pipe. and the one way valve is working the tank had plenty of pressure when i pulled that off
- Location
- Reno,NV
waterbox broken baffle
steve-uk
Manners cost nothing
- Location
- Barrie - ontario
No, Fuel starvations means it will run like crap, lack of oil will blow your motor up....
again sounds like your not getting the fuel you need
as Torpedo said check the crankseals, you may be better to check by pulling the flywheel cover
- Location
- CT
ok i think im getting close. probably a fuel issue. i ran it today with the pipe off and it seemed alright. started and ran it with just the front plug boot on and it ran by itself. then tried it with just the back boot on and it didnt really like to run. id have to gas it to get it going and it would shut off after 1-3 seconds. I couldnt get it to run by itself with just the back cylinder alone so im assuming its restricted on fuel. I even swapped plugs to make sure that wasnt it.
steve - no fuel means no oil tho since they r mixed
steve - no fuel means no oil tho since they r mixed
steve-uk
Manners cost nothing
- Location
- Barrie - ontario
wont run without fuel so no oil is the least of your problems
now you described how you ran it with one plug at a time....sounds like you could simply have a break in your plug wires... check continuity before you go any further may save you alot of pain
what carbs you running? they have an external fuel pump?
- Location
- CT
but if one cylinder is running fine and the other one is starving for fuel it would seize up with no lubrication. They are mikuni 44's. is there an easy way to check continuity besides swapping to my other backup coil? its a fairly new rebuilt coil from JSS
- Location
- Granbury, TX
Honestly, before you guys try and make it too complicated, will you at least try two things for me ross?
1) Pull off your plug boots and cut the wires back ~1/4 to 1/2" reinstall caps and boots.
2.) Either swap out your s/s switch or take the lanyard post switch apart and clean the 4 contacts in switch. Worst case scenario, you find that the contacts and the little forks in the switch are toast.
At least check it for me. I have had the exact symptoms you are explaining due to a start stop switch going bad... on 2 different skis.
1) Pull off your plug boots and cut the wires back ~1/4 to 1/2" reinstall caps and boots.
2.) Either swap out your s/s switch or take the lanyard post switch apart and clean the 4 contacts in switch. Worst case scenario, you find that the contacts and the little forks in the switch are toast.
At least check it for me. I have had the exact symptoms you are explaining due to a start stop switch going bad... on 2 different skis.
- Location
- CT
well to make it even easier to determine if its that one plug wire or a fuel issue tomorrow ill connect the plug boot that i use for the rear cyl to the front cylinder and try to run just that. if it runs then i know its a fuel issue in the back carb. if it doesnt then its the plug wire with an issue. im almost positive that u can put your plug wires to either cylinder and it will run correct? ill keep you posted tomorrow
Peter123
C-Note
- Location
- Houston, TX
At Corpus this Spring, that was my issue. We thought it was a fuel issue and you went through the carb for me right before we left. Got down there, still having the issue. People suggested it was the reeds and several other things, but then Penguin (I think) came over and cut back my wires and BRAP!!!
The Penguin
triple secret probation
- Location
- down by the river
Yup, that was me.
- Location
- CT
haha funny you saw the post penguin. so i ran the cylinders on the opposite plug wires and its the same thing. the rear cylinder still wouldnt idle for very long and the front cylinder would run till i shut if off. so the problem didnt follow the plug wire. its gotta be fuel
- Location
- Granbury, TX
(unsubscribed)
'Pull off your plug boots and cut the wires back ~1/4 to 1/2" reinstall caps and boots.'
Don't do this if it is a fairly new JSS coil, never had an issue with their connections before. You can't duplicate their connection quality when you reattach the ends.
Don't do this if it is a fairly new JSS coil, never had an issue with their connections before. You can't duplicate their connection quality when you reattach the ends.
- Location
- CT
and it makes sense that its a fuel issue cause it leaned it out so thats why it was reving higher on the trailer
Peter123
C-Note
- Location
- Houston, TX
lol
Peter123
C-Note
- Location
- Houston, TX
Any updates?
- Location
- CT
well i took the carbs off and checked them out and everything looked good and normal. checked the fuel lines from the tank to the carb and that was fine. After all this i think i know what it is. Its probably an air leak. My ski is showing the symptoms of that why didnt anyone think of this!! Ill do a leak down test soon and let you guys know.
- Location
- CT
Just wanted to update everyone on the answer to my problem. The carb linkage set screw was loose so both butterfly flaps were not in sync and one was basically flapping in the breeze. Thanks for all the help.
- Location
- Granbury, TX
Glad you figured it out!!!!! Thanks for updating the thread too, so many times I've searched and found threads pertaining to an issue I'm having and they have no conclusion!