November 13th, 2013, 02:58 PM | #1 |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Bike won't start suddenly.
It was only sitting a week with no starting problems of late. Bike was running well of late.
The only thing I can think of is that while lubing my chain, I twisted the idle knob quite a few turns. Just a dumbazz move on my part. (Didn't know that was the idle control) Is it possible I cut off the fuel to the motor? I've tried toying with the knob and trying to give it a start for short spurts, but I don't want to drain my battery until I get some advice. It seems the motor isn't getting fuel. The starter seems like it's running fine. Motor sounds like it's turning over. A sidenote: The bike had very slight starting problems over the summer, until I ran a tank of seafoam, and was fine after that. I'm assuming it was slightly dirty carbs. After that seafoam, no problems. |
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November 13th, 2013, 03:11 PM | #2 |
Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
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That's with full choke, right? I'd try manually opening the throttle slightly as you are cranking.
If you haven't gassed-up lately, you may be completely on summer-blend, which will make cold starts more difficult. If the level in the tank has been low, you may also have some condensation in the fuel. Charge the battery so you will have time to try a few different things. Once it's running you may need to make some adjustments to the idle mixture (if you've removed the caps). In cold weather, settings that were on the lean side in 80 degree weather will be significantly leaner, so richening the mixture is required. You'll also want to make sure the idle speed is set around 1300. |
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November 13th, 2013, 03:31 PM | #3 | |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Quote:
Fuel should be good. Pretty fresh, and mostly full tank. Is it possible the idle control is out of spec now? When I was toying with it, i turned it clockwise until I met resistance. And then turned it left several turns (didn't encounter any resistance). Now I've got it just about 3 counterclockwise turns from the resistance you encounter when turning it clockwise. The battery is on a tender. Thanks. You guys are quick. |
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November 13th, 2013, 04:02 PM | #4 |
wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
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MOTM - Oct '12, Feb '14
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your idle is all messed up. try starting it with just a little bit of throttle
you can take the side panel off and look at where the idle screw pushes on the rotating butterfly part... adjust it until its just moving the drum and then try starting it... ajdust until it stays running... then warm it up and adjust it down to 1500ish after its plenty warm.
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November 13th, 2013, 04:26 PM | #5 |
not an actual panda
Name: dan
Location: philadelphia
Join Date: Aug 2012 Motorcycle(s): 2008 Ninja 250, 2009 CBR600RR (Sold) Posts: A lot.
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try starting it slowly.
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November 13th, 2013, 05:38 PM | #6 |
Fast-Guy wannabe
Name: Jason
Location: Brentwood, Ca
Join Date: Oct 2011 Motorcycle(s): 2009 Ninja250, 2011 RM-Z250, 2004 NSR50, Posts: A lot.
MOTM - Jan '13
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Yeah what alex s. said you need to make sure the idle screw is moving the butterfly valves just a little as if you where cracking open the throttle a hair(that's basically what it's doing). once you get it started then you'll have something to adjust it to. If you bike normally needed choke then do the same thing.
I'm not sure why you would be touching you idle screw but since you did you have me worried a bit. I hope you didn't do anything else funny like accidentally catch a vacuum hose and pull it loose. |
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November 14th, 2013, 01:36 PM | #7 | |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Quote:
I'm going to try again tonight. I don't really see an idle screw. It's more of a knob connected to a flexible line that runs through a hose and ends up somewhere under the carbs. But I'm going to try everything you said tonight. |
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November 14th, 2013, 01:41 PM | #8 | |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Quote:
But I'll try tonight. Thanks for all the responses. You guys are really helpful. |
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November 14th, 2013, 01:49 PM | #9 | |
wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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Quote:
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November 14th, 2013, 06:18 PM | #10 | ||
Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
Quote:
Do you feel ready to ride that bike? Have you received any proper instruction about riding in general? ..... MSF course maybe?
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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November 14th, 2013, 06:21 PM | #11 |
wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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oops. the 250 carbs have the drum all the way on the far side. i was picturing my yamaha carbs... they are split down the center.
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November 15th, 2013, 02:42 PM | #12 | |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Quote:
Just wasn't thinking when I turned that line. Simple as that. |
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November 15th, 2013, 02:50 PM | #13 |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Anyhow, after some snooping around yesterday, I noticed the screw that connects to the "butterfly" part which puts tension on the throttle cable came out of the thread completely.
So basically, I had no fuel flow to the engine, right? I was able to get that screw back in, and adjust the idle knob to the point where a little tension moves the throttle line. The bike still didn't start after about 5 short attempts with some choke. Is it starved of fuel, and needs some cranking with choke and throttle? Asking so I don't flood the motor and/or drain my battery. |
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November 15th, 2013, 03:35 PM | #14 | |
Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
Are you sure that the whole refusal to start up began with the manipulation of that knob? Maybe a rain-over, drop, contaminated gasoline, new fuel filter, any modification, etc.? My second silly question, yes, but the thing is that that knob alone should not have made a significant change in behavior, specially if you crack the throttle open at start-up.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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November 16th, 2013, 03:28 PM | #15 | |
ninjette.org newbie
Name: David
Location: Chi Burbs
Join Date: Nov 2013 Motorcycle(s): 2008 Ninja 250 Posts: 7
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Quote:
Just took some cranking and throttle. It was blowing moderate smoke while warming up. (Assuming that was excess fuel being burned off?) The issue was that the knob was disconnected leaving no tension on the throttle cable. I basically ran the carbs dry while trying to repeatedly satrt the motor, right? Anyway, thanks for everyone's help. That's the last time I start grabbing at things without thinking. |
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