throttle when starting?

I've got my left over 2014 superjet. Ten hours on it now. When starting should you have to work the throttle? This one I do. Every other ski whether it's been a yammi or kawi, hot or cold, has started instantly when I hit the start button. This one does not. Hot or cold you have to work the throttle to get it to start. Stock is bone stock. Elevation 2300ft.
 
has it always been like this? It should start with a push of the button especially being stock and new.

Where did you buy it? Can you confirm the jetting was setup for your elevation? I'm thinking your jetting is off and just set to normal factory specs
 
Yah been like that since I bought it. I just confirmed with my buddy that has a bone stock 2013 that he has to use the throttle too. I'd guess the jetting is stock from the factory. Most of time its how everything come now a days. Upto the customer to set it up right.
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
Have you tried turning the idle up a tad? My superjet wants to be at 1400-1500rpm to not stall under load. If i turn my idle down to 1200, it will idle for about 3-4 seconds but will usually stall. No throttle needed with a higher rpm idle. My superjet runs flawlessly. Thats where it is hapy. My x2 is happy at 800-1000 rpm idle.
 
I did try turn up the idle. It didn't help with starting. Are these jetted from the factory for sea level? Or are they like most new "toys" where they are leaned right out to meet the emission standards. For example my 08 YFZ 450 quad came from the factory jetted very lean and have to be rejetted once purchased. Being at 2300ft elevation would make my superjet rich as it sits if it is jetted and tuned correctly for sea level.
 

CRJ

Hibernating
Location
Toronto
my square fires off no prob without throttle on the stand. in the water i have to feather it as its under load, and its not the happiest about idling. Purely due to the load on the pump
 

Big Kahuna

Administrator
Location
Tuscaloosa, AL
Pop the cap off the air speed adjusters. Turn the screw in 1/4 turn and try it. The air is thinner up there. This way you are reducing the amount of fuel initially injecting into the intake. If that does not work, go the other direction.
 
My 2013 has needed full choke and throttle to start since the day I bought it off the showroom floor. Never thought much about it since it always starts if I do that.
 
Location
Vegas
It's all in the tune of the carbs. Everything comes into play my aquabot has almost no idle and will fire right and idle
...... up no primer of anything
 

cmlangdale

username ^ stuff I say >
Location
Nebraska
Mine will usually start up cold without choke or throttle just fine. Although when it's warm and in the water I have to give it throttle to start it.
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
I did try turn up the idle. It didn't help with starting. Are these jetted from the factory for sea level? Or are they like most new "toys" where they are leaned right out to meet the emission standards. For example my 08 YFZ 450 quad came from the factory jetted very lean and have to be rejetted once purchased. Being at 2300ft elevation would make my superjet rich as it sits if it is jetted and tuned correctly for sea level.

Factory popoff on a superjet is 52. That is pretty high, but it should run just fine like that.. I had a yfz 450 too, which needed rejetted, but 2-strokes dont tolerate being lean like 4-strokes do, so no, they dont come lean.
 
So I got the caps removed and the carbs tuned so it fires pretty much instantly. I also got the idle re adjusted too. Now I still have an issue of now and then when I fall off and it dies it don't want to start. It takes about 5 minutes of cranking to get it to start. I figured this would also go away once I got the carbs tuned better but it has not. What do I do?
 
Maybe consider installing a primer instead of a choke. I ingest water a lot and the primer really does the trick to get it running because it's gotta clear out for a few seconds after it happens.

FWIW I always run a low idle and use the throttle on purpose because I had an incident where I was whipped off my ski and the lanyard was looped around the bars. the lanyard broke in two with the clip still attached to the start button and started heading towards some big rocks. If my low idle didn't kill the engine I would have been doing some glass work.
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
So I got the caps removed and the carbs tuned so it fires pretty much instantly. I also got the idle re adjusted too. Now I still have an issue of now and then when I fall off and it dies it don't want to start. It takes about 5 minutes of cranking to get it to start. I figured this would also go away once I got the carbs tuned better but it has not. What do I do?

You said it is new so I would suggest you contact the dealer you got it from before you mess with it too much. It's hard to say exactly what is going on without first hand knowledge. It sounds like you have limited knowledge so the second hand information is a little questionable.

There are a number of things that can be causing your issue. Primer or choke shouldn't be it, but trouble cranking again could be from water ingestion. You could also have issues with your fuel pumps. Carbs can be finicky and if you have a model that is a year old it's not brand new even if it just got started for the first time. The needles are just rubber and they could be sticking. It would certainly be a cause for the ski to fall on its face and not want to get going again. A primer would help with restarting but it wouldn't change a faulty carb, the ski shouldn't stall.

As said, it's hard to take something new apart especially with limited experience. I would highly suggest you go to the dealer and see what they will do for free or find a reputable mechanic to check it out. The few hundred I spent to have a good tuner go through my Superjet was some of the best money I have spent. Yes, I can do it myself, but I dropped it off, worked an overtime shift, got it back the next day, gave him that money and never looked back.

Value your ride time.
 
I'm up in Canada, its been a few years already since Yamaha has sold a superjet up here. The dealer that brought them in, brought them up as "used" and pulled a few other strings to get them here because in my area the demand is very very high and they all sold in a couple very quickly. So there is no warranty on it. It's tough to chase a problem that does not happen constantly. When I was riding backwards on the hood and then trying to spin a 360 on the hood and re grab the bars, I fell off a good 20 times and it never had an issue restarting. It's just that one time now and then. it mucks up like this. It hasn't happened close enough to shore yet, to quickly get the hood off and pull plugs or do anything else to see whats going on. It runs and it's set up perfect otherwise. Plugs are a nice chocolate brown. Even checked compression and it's perfect at 150psi per side. Friends that are two stroke guys and also owned or currently own jet skis, have ridden it and said the same thing. "it runs perfect''. Always little to no water under the hood. It's never done it when I ride into shore and kill it with the kill switch. Only when I fall off in the lake. Or the one time when I was idling when I was warming it up for the first time for the day. It only happened twice on Saturday during a whole afternoon of riding. When it does restart it kinda fires a couple of times then finally it fires up like normal. Which is why I originally asked about how they where jetted from the factory, because I thought it was flooding somehow when I was falling off. Being that it may richer with my elevation.

Also being that I am in Canada, it is a two week wait to order any parts. No one stocks anything for a superjet. It can be frustrating to order a part, wait two weeks, nope not it, repeat. That was a big factor in why I opened u the wallet and bought a new ski and left it bone stock.
 
I've had brand new start/stop switches behave like that. They can get hung up just before the contacts that kill the spark release, but the starter contacts engage. It will spin forever and never fire until it finally shakes itself until position or you knock on the housing a little. I'm not saying definitively that this is the issue, just don't rule it out because it's new (especially if it sat without a landyard or zip tie for a long time).


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So my best case senerio just happened. Sitting in the garage on the dolley and it would not start. Unhooked the balck and white wire to confirm the kill switch is not hanging up. Poured some fuel into the carbs and she fired right up. So i guess i'm gonna have to take apart the fuel pumps and clean them. Now back to starting almost instantly.
 
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