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Discussion Starter · #1 ·
Hey everyone! Having some problems recently and hoping people had some help/ideas/suggestions. I have a 2009 Ninja 250 and recently have been having trouble with the bike stalling and dying EVERY SINGLE time I come to a stop.

Now I admit, I am new to riding, but I had been riding the bike for almost 6 weeks. Both in town and highway. Plenty of stop and go's. At first I occasionally killed it at a stop, but it fired right back up and went the next time. And that even quit happening after a couple of rides.

But now all of a sudden when I come to a stop and try to take back off, it dies on me. And I'll restart and it happens again. Maybe 2-3 times and then the bike won't even start back up. I've had to push it home a couple of times now....luckily I haven't been far from home each time! :D I let it warm up fully - I take off perfectly fine and it runs smooth...until the first stop. I put it in 1st every time at the stop. Maybe the idle is too low??

Does anyone know what might be the problem. I've tried researching online and here but it seems like I get a MIILION different ideas or topics. Anything from fuel pump, air filter, carbs, maybe even plugs. No concensus from what I can find anyway. I'm not mechanically inclined at all, but willing to try my best. Right now I wouldn't be able to get it to a shop anyway as it keeps dying.

Just seems weird it's happening now is all, and not before, so I do not THINK it's "rider error", but could be wrong I guess.

ANY help and suggestions is GREATLY APPRECIATED from everyone as I am at a complete loss and very frustrated! THANK YOU!!
 

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Well like Earl said this can be caused by many things. However, there are some things that You can check on your own even if your not mechanically inclined. First, lets start with the most common place for error, the clutch. Do you have aftermarket levers. If so. Adjust them for the maximum pull. Also the tensioner which is the twist knob on the clutch lever assembly where the cable goes in. You should be able to turn this. With your left hand on the clutch lever you will feel play in the cable before it starts to get tight this play will also be seen between the lever and the lever assembly. You should be able to fit a dime between the lever and lever assembly. No more no less play adjust the knob until you get the right amount of play. Next is fuel. You may have bad gas. Go to your local autoparts store and buy something called heet. Its a fuel treatment but more so its made to treat water in a gas tank. The reason water may be the cause is because the bike has enough spark to burn it off while your giving it throttle but not enough to burn the water off when u are at idle. The shape of your tank may hold the water in a area that is not near the fuel stem until your momentum is forward then the water moves to the gas stem. Sucks but its another common issue. Spark plugs may be burnt but on bikes they are usually not the easiest to change so Id stick to the easy things first. Next would be dirty carbs also from bad gas. Start with the first two things and lets us know and we can go from there
 

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Definitely sounds like it could be a fuel issue. Gas doesn't last that long, and if the tank is kept low you can also get condensation to form. Using gas with Ethanol can cause more problems.

What does it idle at warm in neutral? Does it clunk and pull forward when you put it in gear? If so, you need to adjust the clutch. Here's a link to the ninja250.org tech section on clutch cable adjustment - Adjusting the clutch cable - Ninja250Wiki

Draining the tank completely and filling with fresh 87 octane without Ethanol is a good fist step. If you can't get 87 without Ethanol go up to the next grade that doesn't have it.

I'd add 1oz per gal of Techron Concentrate fuel system cleaner to the fresh gas. It may take a while to get the fresh gas completely through the system. In the mean time, if the clutch is adjusted fine, I'd bump the idle up to 1500 temporarily to keep it running at a stop. After a hour of running you can ease it back down and see if it will idle at the proper speed.

Let us know.


Jay
 

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Discussion Starter · #6 ·
Man, thanks for all the replies and advice everybody - I appreciate it! I was thinking of increasing the idle speed as well, so that's cool to hear it might help and I was onto something. When warm I think it idle's just a bit above 1000 rpms so I knew from the owner's manual I found online its recommended to be slightly higher.

I'll also try looking into the clutch play as byte suggested. It doesn't usually jerk or grab when taking off. Seems to be fine right out the shoot....just as long as I never have to come to a stop! LOL! But I'll check the clutch as well, couldn't hurt and might be needed to tinker with. Thanks for the link.

I'll also try the gas thing. A friend at work rides (although not sport bikes, but figured he might know something that could help) and he mentioned maybe bad gas too so perhaps that's a strong possibility as two of you mention it as well. I have just put regular unleaded in it before - didn't know I needed to worry about that sort of thing so I'll definitely look for higher grade from now on. Not sure what the local station has as I live in a small town (only 1 gas station) but there's nearby locations too.

I'll definitely keep everyone posted on the status. Might be a couple days before I can get to it with some other plans I've already got going on. Plus I'll need to get something to syphon the old gas out and either some heet or techron as suggested. But I'll let everyone know how it goes and seriously - THANK YOU AGAIN for all the help and suggestions! :thumb: Everyone here seems really cool and helpful - especially for a "newbie" such as myself!!:D THanks!
 

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Turn your idle speed up and check to see how dirty your air filter is. Kawasaki recommends air filter replacement @ 2 years.
 

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Discussion Starter · #8 ·
Okay guys, I'm starting to wonder if I have a "magic touch" of destroying mortorcycles now?!?!:facepalm: I adjusted the idle first and syphoned out the old gas. I put in some fuel system cleaner as well and then went to put in the new gas I had bought that was ethanol free 89.

However, as I did this I noticed that as I was pouring the gas in, there was a leak coming from under the bike. It wasn't the same amount I poured in, so most of the gas is staying in the tank. And it does NOT continue to constantly leak out. I pour some in, stop, it leaks for a second or two after, then stops.

I looked under the bike and the "hose"/"tube" that's leaking does not appear to be "cut" or "broken" off - at least that I can tell. And I looked around thinking it must've come loose from somewhere and I could reattach, but found nothing. Unless I'm just not looking in the right area, but I looked all around and there's not a lot of slack left with the tube. This is the first time I've filled up the tank so never noticed it before but never looked under the bike either to see if it was already like that.

I haven't even put in one gallon yet so it can't be overflow. Maybe 1 gallon tops I guess but doubt it.

What do you guys think this might be and how can I fix it? I haven't tried to restart the bike yet due to this because I assumed this was either part of my problem, or yet another one I need to fix first anyway.

Sorry if this is a "noob" question, but...well.....honestly.....that's what I am I guess! :D Thanks for any help, I appreciate it!
 

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Can you post a photo of the hose that is leaking? There is a tank vent hose and carb overflow hoses.

If it's not dripping now, I'd try starting it. Did you open the carb bowl drains? You'll need to crank a bit (crank 5 seconds, wait 5 seconds) to build vacuum (or put the petcock on Prime temporarily if it has it) if the bowls are empty.

As Blue noted - check the air filter also.

Do you know anyone in the area that can help you?
 

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I'd check to make sure the fuel line wasn't old and dry rotted like mine was.
 

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What position is your petcock in? ON or PRI? Make sure it is in the ON position. Also check around the carbs for any visible fluid leaks. Inspect the fluid coming out of the suspected hose and verify what it is.
 

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Discussion Starter · #14 ·
I'm at work now, but will check the petcock when I get home tonight. I'll doublecheck but am 99% sure it's gas that does leak out of the hose. It looks like there's two hoses right next to each other that both sort of just hang down and appear to not have a stop at the end. The one that leaks is more towards the left side of the bike than the other (although they are side by side pretty much), if that makes sense. Sorry - no smartphone to be able to upload pics!

Assuming I have fixed the stalling/dying issue with the new, better gas and additive plus an increase in idle, do you guys think it would be safe to drive? If this does end up being a carb issue, I just don't really trust myself to correct it myself - even with everyones infinite wisdom and expertise on here!! :D - so would probably rather just take it in to have it looked at. But I'd have to drive it since I have no truck/trailer to haul and just want to be sure I wouldn't do more damage or something. I'll check again when home, but like I said, I don't THINK it just leaks continuously, only a bit when actually pouring fuel in the tank.
 
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