2014 Super jet sunk and won't start. What now?

Brink420

Brink420

Location
Grosse Pointe Woods, MI
Model ski: 2014 Yamaha Superjet, completely bone stock.

I let my friend take my SJ ski for a ride and after 5 minutes of riding it he basically sunk it. He said he knew what he was doing but he obviously belongs on a couch! Watching him fall off it a bunch was the first warning sign. Note to self: Never let your friends ride your prized ski. You will regret it!

We were able to tow the ski to a boat swim platform and dump all the water out. Took the plugs out immediately and pumped all the water out of the engine and compartment. We were able to get the ski to start right away, however only 1 out of 2 pistons were firing and would eventually stall.

I let the ski dry out all night, had her upside down to make sure all the water was out of engine. The next day I popped some new spark plugs in, pumped out all the gas just in case it had water in it. Took off the air filter too. I was able to get the ski to fire up for a minute, fully choked, than it stalls. Now it won't start at all. The engine is not blown or seized. Turns over fine. Both spark plugs have spark too. It's as if the ski isn't pumping fuel from the tank to the carbs? I don't get it.

What would you do if you were me? The ski flat out will not start.

I have a local motor sports shop that specializes in 2-stroke repair and tune ups, I'm going to drop it off up there and hopefully can come up with a positive resolution.

My fear is either the REEDS are toast (from the rider attempting to start the engine when the engine compartment was full of water). OR the fuel lines are blocked up? SMH here? I feel so stupid. Don't ever let your friends ride your prized ski, even if they claim they can ride stand ups!

Thank you community! Looking forward to positive responses here.
 
Roseand

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
Could have water in the gas. Had that happen before. You need to get it taken care of ASAP so that water doesn't ruin your crank bearings. Fog the hell out of it when you can.

Sent from my SM-G920V using Tapatalk
 
DAG

DAG

Yes, my balls tickled from that landing
Location
Charlotte, NC
check compression to make sure you didn't tweek a rod.

I kinda lol'd at the "dry out" method :) but hey you tried. You don't know what you don't know but next time don't let it air dry, all that's going to do it rust it up and cause you more problems. You must get it fired up and let the heat dissipate the moisture out. We all been there skis will sink again so it's good practice for the next time so you can do it right :)
 
WB1994

WB1994

Location
Amherst NH
Clean the whole fuel system. Pull carbs fully appart, blow out fuel lines and put fresh gas in it. Dont have the dealer do it , do it yourself . Its a simple job.
 
Brink420

Brink420

Location
Grosse Pointe Woods, MI
Just dropped her off to Mike at Lakes Motor Sports in Waterford, MI. They are the best in the Detroit-area so waiting for the results. Blows my mind I can't get it going. Replaced the gas immediately and everything. I'm floored that I cannot figure it out. I'll let you all know the outcome. Thank you for all the feedback. Brrap!
 
Quinc

Quinc

Buy a Superjet
Location
California
You better hope Mike in detroit gets on it right away or you are going to be looking at a new crank, seals, and gaskets for a rebuild. 100's of dollars plus labor. When you could have done it yourself in less than an hour..

Start at about the 10min mark to see how to properly get it started:
 
nucleus_coolins

nucleus_coolins

Does things to makes the do goods
Location
Bay Area, California
U were on the right track. Once u get it firing on 1 cyl, drop it back in the water and ride the sht out of it. 2nd cyl will come back after a minute of dogging around. Then just ride it for 15-20m to burn off leftover moist and youre in the clear.
 
Brink420

Brink420

Location
Grosse Pointe Woods, MI
Yeah I tried ALL of that, believe me. Cranked through 2 batteries and still nothing. It just won't suck any fuel to the carbs. We thought it would be easy too. Nothing like a bunch of your know-it-all friends who think they know what they're doing with 2-strokes and standing around and staring at a broken superjet. None of us could figure it out. There is zero water in the engine. The crank is bone dry, zero corrosion. turns great. When we did start it right after it happened only 1 out of the 2 cylinders were firing. We couldn't keep it running for very long without it stalling over and over and over. Did this for almost an hour. The place I brought it to is definitely NOT a dealership. @Quinc, I watched that very same video and still nothing. Thank you for posting that. I appreciate all the responses and will let you all know how f****d I am when I hear back from Mike. Ha! Good vibes please, Good vibes...
 
Sinkhole

Sinkhole

Location
Livermore, ca
iangdesign said:
It's already dropped off with Mike...hopefully Mike can get to it quickly. Also tell me Mike to send the bill to your buddy. Good luck!
Click to expand...
Hopefully! That's a big word. You also could of fed fuel in through the top of the carbs and ran it in the water on your trailer. Most likley the carbs are full of water. Maybe a damaged diaphragm I don't know.

But if I were you. I don't care how embarrassed I was by all these post. I would call Mike back to see if he got it running. And if he not working on it. I would go back and pick it up and take it back and feed gas through the top of the carbs to keep it running. Do that on the boat ramp while the ski in the water. Then pull the carbs apart and clean the water out. Then google how to prime a super jet carb. And try again.
 
Sinkhole

Sinkhole

Location
Livermore, ca
Brink420 said:
Model ski: 2014 Yamaha Superjet, completely bone stock.

I let my friend take my SJ ski for a ride and after 5 minutes of riding it he basically sunk it. He said he knew what he was doing but he obviously belongs on a couch! Watching him fall off it a bunch was the first warning sign. Note to self: Never let your friends ride your prized ski. You will regret it!

We were able to tow the ski to a boat swim platform and dump all the water out. Took the plugs out immediately and pumped all the water out of the engine and compartment. We were able to get the ski to start right away, however only 1 out of 2 pistons were firing and would eventually stall.

I let the ski dry out all night, had her upside down to make sure all the water was out of engine. The next day I popped some new spark plugs in, pumped out all the gas just in case it had water in it. Took off the air filter too. I was able to get the ski to fire up for a minute, fully choked, than it stalls. Now it won't start at all. The engine is not blown or seized. Turns over fine. Both spark plugs have spark too. It's as if the ski isn't pumping fuel from the tank to the carbs? I don't get it.

What would you do if you were me? The ski flat out will not start.

I have a local motor sports shop that specializes in 2-stroke repair and tune ups, I'm going to drop it off up there and hopefully can come up with a positive resolution.

My fear is either the REEDS are toast (from the rider attempting to start the engine when the engine compartment was full of water). OR the fuel lines are blocked up? SMH here? I feel so stupid. Don't ever let your friends ride your prized ski, even if they claim they can ride stand ups!

Thank you community! Looking forward to positive responses here.
Click to expand...
I think it's ok to let people ride our ski's. Accidents happen. I too also have a 2014 superjet. One of the first things I did was add a Bilge pump. I did not feel comfortable that that tiny suction screen would do a proper job cruzing around attempting tricks. These ski's take on water just about every time you crash them. That being said. My son has a 550 that fill up with water with out a bilge pump. Many time it has come close to sinking. It has injusted water several times as well. Both my superjet and fx-1 have bilge pumps. Would not feel comfortable riding with out.
 
R

Ralphmullerjr

Location
Memphis tn
You should be ok. Carbs just need to be cleaned and adjusted. Happen to me last summer. Once you get it cranked or carbs rework by shop run pure gas not ethanol and add seafaom to it at all fill up's.
 
Vumad

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
To get the water out, take out the plugs and crank the ski over. Alternating a finger over each plug hole can sometimes help.

For very bad ingestion, flip it over, dont just hope it drains, crank it upside down so the pistons are moving and opening the ports fully.

Make sure the plugs are dry, compressed air helps, you can ever heat them up a little with a lighter, use new plugs if any doubt of being fouled.

Put a tiny shot of starter fluidin a plug hole, put the plug in lightly hand snug, leave the other llug out, crank over just a few revolutions, then alternate to the other hole, repwat until it fires.

If it will not fire, try flipping it again.

Important note, starter fluid burns hotter, with no lubrication and is more likely to backfire. Dont get carried away with your squirts.

When the ski does run, dont abuse it on one cylinder hoping the other will eventually clear out after riding hard, keep up your technique until both cylinders are firing.

Important note, do not run a ski withhand tight plugs formore than a moment. They can back out and ignite outside the block. Tighten them with a wrench when the ski is running again.

Tip, In the absence of a primer, you can hand choke a stock airbox. Placing your hand over the trumpet chokes better than the choke plate. Just realize the flooding with fuel and flooding with water are essentialy the same, excpet water is dangerous to your crank and fuel is dangerous to you.
 
Brink420

Brink420

Location
Grosse Pointe Woods, MI
Thank you all, the ski is back to life and running real good! The damage was around $100, not too bad! Good to find an honest mechanic when you can't fix it yourself! The carbs and lines were clogged with water/debris. That was the reason why fuel wasn't getting it, clogged up fuel line. Time to invest in an air compressor. I could've done this in my own garage at home. :cool:
 
You must log in or register to reply here.
Top Bottom