2010 ninja 250 wont stay on!

daveduno · May 27th, 2014, 10:45 AM

Hi,

My bike wont stay on anymore. I ride almost every day, except for Jan-Feb of this year due to the snow/cold.

It rained pretty hard on Day 1 or Day 0.

Day 2,
Bike runs fine, idles fine, revs normally, It went to at least 8k rpm. (did not try riding it). I did see some water drip out from under the seat on the left side.

Day 3
It turned on and revs up to 3k rpm. when I twist the throttle more, it sputters and lowers rpm. Tried for few minutes, to see if it would go higher, since a cold bike would sometimes do that. Nope, it slowly got worse. The idle rpm kept dropping over time til it just stalls.

Day 4
No improvement; it turns on and idles really low, then stalls.

So what is going on? From the searching around forums, I think it's the carburetor. Either water in gas, maybe gummed up carburetor?

csmith12 · May 27th, 2014, 10:54 AM

Did you try fresh gas?

daveduno · May 27th, 2014, 10:59 AM

I added gas a day before the rain. So tank is at least half full.

csmith12 · May 27th, 2014, 11:00 AM

Water will collect in the float bowls of the carbs. If you suspect water in the gas, it's best to just drain the entire system and start fresh.

cbinker · May 27th, 2014, 11:01 AM

are you using the choke and letting the bike warm up before turning the choke off?

daveduno · May 27th, 2014, 11:11 AM

It stalls with the choke on, after a few seconds.

alex.s · May 27th, 2014, 11:22 AM

sounds like water in the gas. drain the carbs and tank

daveduno · May 27th, 2014, 11:38 AM

Thanks, I will youtube how to drain float bowls.

broilmebk · May 27th, 2014, 02:42 PM

Yea, water in the fuel. I was able to get away with just draining the bowls when this happened to me.

daveduno · May 27th, 2014, 07:47 PM

yes! after draining the bowls, it started!! it's still bogging a lil bit, but it went away after riding for a while. The fluid that came out was clear, so i guess it's clean? I think it happened because the drain next to it was clogged with dirt/bits of leaves? I wiped it off, but what can I pour down that drain to make sure it's clear and not clogged? Rubbing alcohol? Or should I use an air compressor to make sure it's clear, and then pour something.

csmith12 · May 27th, 2014, 07:55 PM

Nice! Do a stabil treatment and run through that tank of gas as soon as your can.

Air gun on the compressor here to clear the drain/overflow.

May 27th, 2014, 10:45 AM	#1
daveduno ninjette.org member Name: Dave Location: nyc Join Date: Mar 2014 Motorcycle(s): nina 250r 2010 Posts: 10	2010 ninja 250 wont stay on! Hi, My bike wont stay on anymore. I ride almost every day, except for Jan-Feb of this year due to the snow/cold. It rained pretty hard on Day 1 or Day 0. Day 2, Bike runs fine, idles fine, revs normally, It went to at least 8k rpm. (did not try riding it). I did see some water drip out from under the seat on the left side. Day 3 It turned on and revs up to 3k rpm. when I twist the throttle more, it sputters and lowers rpm. Tried for few minutes, to see if it would go higher, since a cold bike would sometimes do that. Nope, it slowly got worse. The idle rpm kept dropping over time til it just stalls. Day 4 No improvement; it turns on and idles really low, then stalls. So what is going on? From the searching around forums, I think it's the carburetor. Either water in gas, maybe gummed up carburetor?

May 27th, 2014, 10:54 AM	#2
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Did you try fresh gas? __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

May 27th, 2014, 11:00 AM	#4
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Water will collect in the float bowls of the carbs. If you suspect water in the gas, it's best to just drain the entire system and start fresh. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

May 27th, 2014, 11:01 AM	#5
cbinker Track Clown Name: Chris Location: Kingman, AZ Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot. MOTM - Sep '15	are you using the choke and letting the bike warm up before turning the choke off? __________________________________________________ TEAM ALFALFA www.apexassassins.com

May 27th, 2014, 11:22 AM	#7
alex.s 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	sounds like water in the gas. drain the carbs and tank __________________________________________________

May 27th, 2014, 10:59 AM	#3
daveduno ninjette.org member Name: Dave Location: nyc Join Date: Mar 2014 Motorcycle(s): nina 250r 2010 Posts: 10	I added gas a day before the rain. So tank is at least half full.

May 27th, 2014, 11:11 AM	#6
daveduno ninjette.org member Name: Dave Location: nyc Join Date: Mar 2014 Motorcycle(s): nina 250r 2010 Posts: 10	It stalls with the choke on, after a few seconds.

May 27th, 2014, 11:38 AM	#8
daveduno ninjette.org member Name: Dave Location: nyc Join Date: Mar 2014 Motorcycle(s): nina 250r 2010 Posts: 10	Thanks, I will youtube how to drain float bowls.

May 27th, 2014, 02:42 PM	#9
broilmebk ninjette.org sage Name: Brian Location: Orange County, CA Join Date: Apr 2012 Motorcycle(s): '12 ninja 250r Posts: 762	Yea, water in the fuel. I was able to get away with just draining the bowls when this happened to me.

May 27th, 2014, 07:47 PM	#10
daveduno ninjette.org member Name: Dave Location: nyc Join Date: Mar 2014 Motorcycle(s): nina 250r 2010 Posts: 10	yes! after draining the bowls, it started!! it's still bogging a lil bit, but it went away after riding for a while. The fluid that came out was clear, so i guess it's clean? I think it happened because the drain next to it was clogged with dirt/bits of leaves? I wiped it off, but what can I pour down that drain to make sure it's clear and not clogged? Rubbing alcohol? Or should I use an air compressor to make sure it's clear, and then pour something.

May 27th, 2014, 07:55 PM	#11
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Nice! Do a stabil treatment and run through that tank of gas as soon as your can. Air gun on the compressor here to clear the drain/overflow. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

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