Need assistance / help

areifel · March 15th, 2011, 05:39 PM

I will try to make the long story short. I have a 2009 black ninja 250. less than 5,000 miles on her. yesterday i took her to school roughly 25 miles round trip. started up perfect and ran smoothly. Today i took her to the gym and same thing again started smooth and ran great. i left it the sun for about an hour (if the sun has anything to do with it) went back out and started her up and let her idle for about 5 min since i was on the phone. I preceded to ride the bike to the end of the road and at the stop sign my rpms kept getting lower and lower until it just stalled. so i thought okay, not a big issue. i started it up again and road down the road. seemed fine to me. about a mile down the road it stalled while i was riding. i pulled over and attempted to start it from there with and without choke but no luck. i sat there for a few minutes and let it cool down and tried again, still no luck. any suggestions?

two days before the bike did sit for about a week, if that has anything to do with it.

-Thanks

DaBlue1 · March 15th, 2011, 05:48 PM

Does your Ninja whine or whistle? Sometimes the tank vent valve can get overwhelmed and not vent fast enough causing a vacuum in the tank (especially sitting in direct sunlight). Crack the gas cap and see if it starts. Something similar happen to me except I was moving at high speed when the bike died.

areifel · March 15th, 2011, 05:49 PM

Quote:

Originally Posted by DaBlue1

Does your Ninja whine or whistle? Sometimes the tank vent valve can get overwhelmed and not vent fast enough causing a vacuum in the tank (especially sitting in direct sunlight). Crack the gas cap and see if it starts. Something similar happen to me except I was moving at high speed when the bike died.

yeah, it whistles and whines constantly. Even when just sitting in the garage. i can also here it while i am riding.

areifel · March 15th, 2011, 06:01 PM

nope, no luck with the gas cap. i am surprised the battery hasn't died yet.

DaBlue1 · March 15th, 2011, 06:21 PM

You may have to pull the left fairing off and turn the tank petcock to PRI for a few seconds. This will allow fuel to flow to the carb without use of the engines vacuum. Then try to restart.

areifel · March 15th, 2011, 06:22 PM

Quote:

Originally Posted by DaBlue1

You may have to pull the left fairing off and turn the tank petcock to PRI for a few seconds. This will allow fuel to flow to the carb without use of the engines vacuum. Then try to restart.

i will go try that. thanks.

bob706 · March 15th, 2011, 06:47 PM

I had the same problem. I found a piece of gunk blocking the vent line from the tank (left side) and took an air hose to the line itself and have not had a reoccurance.

areifel · March 15th, 2011, 07:15 PM

Quote:

Originally Posted by bob706

I had the same problem. I found a piece of gunk blocking the vent line from the tank (left side) and took an air hose to the line itself and have not had a reoccurance.

I can't seem to fd the petcock. I am familiar with what they look like and I have the left fairing off. Any ideas?

bob706 · March 15th, 2011, 07:20 PM

near the rear of the tank.

CZroe · March 15th, 2011, 08:21 PM

This has happened to many of us, usually THOUSANDS of miles apart, which is probably why it hasn't happened to Sean again. We have threads on it already.

This is the usual sequence of events:
Bike is fully warmed up
Tank cooling event (parking the bike ~15 minutes, encounter rain or sudden cold pocket, etc)
Ride hard due to the engine being already warm
Engine begins running poorly within a block or two until it dies
Doesn't start again for several minutes; usually after you've checked all fluids and opened the tank

It seems to be when the tank develops a vacuum due to cooling. It has happened to me several times in 20,000 miles and the only time it wasn't after a short cool down was when I encountered cold/rain.

areifel · March 15th, 2011, 08:25 PM

Thanks everyone!!! I primed it for about 30 seconds and she fired right up.

bob706 · March 15th, 2011, 08:33 PM

Quote:

Originally Posted by areifel

Thanks everyone!!! I primed it for about 30 seconds and she fired right up.

AMMOCAN · March 15th, 2011, 09:21 PM

Areifel, I am glad that you figured out the issue and now everything is kosher. Being a proud new fifty owner I have been reading my manual religiously and I remember it saying to NOT let your motorcycle idle for more than five minutes, as overheating and engine damage may occur. Obviously this wasn't your issue, as everything is fine now, but when you said you just left it idling while you were on the phone, this is what I was thinking might have been the issue.

In my manual the NOTICE about this is on page 48.

March 15th, 2011, 05:39 PM	#1
areifel ninjette.org member Name: Drew Location: Florida Join Date: Nov 2010 Motorcycle(s): 2009 Ninja 250R Posts: 194	Need assistance / help I will try to make the long story short. I have a 2009 black ninja 250. less than 5,000 miles on her. yesterday i took her to school roughly 25 miles round trip. started up perfect and ran smoothly. Today i took her to the gym and same thing again started smooth and ran great. i left it the sun for about an hour (if the sun has anything to do with it) went back out and started her up and let her idle for about 5 min since i was on the phone. I preceded to ride the bike to the end of the road and at the stop sign my rpms kept getting lower and lower until it just stalled. so i thought okay, not a big issue. i started it up again and road down the road. seemed fine to me. about a mile down the road it stalled while i was riding. i pulled over and attempted to start it from there with and without choke but no luck. i sat there for a few minutes and let it cool down and tried again, still no luck. any suggestions? two days before the bike did sit for about a week, if that has anything to do with it. -Thanks

March 15th, 2011, 09:21 PM	#13
AMMOCAN SLIME-R Name: AMMOCAN Location: Maryland Join Date: Feb 2011 Motorcycle(s): SOLD '10 Kawasaki 250R SE A.K.A. SLIME-R SOLD Posts: 596	Areifel, I am glad that you figured out the issue and now everything is kosher. Being a proud new fifty owner I have been reading my manual religiously and I remember it saying to NOT let your motorcycle idle for more than five minutes, as overheating and engine damage may occur. Obviously this wasn't your issue, as everything is fine now, but when you said you just left it idling while you were on the phone, this is what I was thinking might have been the issue. In my manual the NOTICE about this is on page 48. __________________________________________________

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March 15th, 2011, 05:48 PM	#2
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	Does your Ninja whine or whistle? Sometimes the tank vent valve can get overwhelmed and not vent fast enough causing a vacuum in the tank (especially sitting in direct sunlight). Crack the gas cap and see if it starts. Something similar happen to me except I was moving at high speed when the bike died.

March 15th, 2011, 06:01 PM	#4
areifel ninjette.org member Name: Drew Location: Florida Join Date: Nov 2010 Motorcycle(s): 2009 Ninja 250R Posts: 194	nope, no luck with the gas cap. i am surprised the battery hasn't died yet.

March 15th, 2011, 06:21 PM	#5
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	You may have to pull the left fairing off and turn the tank petcock to PRI for a few seconds. This will allow fuel to flow to the carb without use of the engines vacuum. Then try to restart.

March 15th, 2011, 06:47 PM	#7
bob706 ninjette.org certified postwhore Name: Sean Location: Mary Esther, FL Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.	I had the same problem. I found a piece of gunk blocking the vent line from the tank (left side) and took an air hose to the line itself and have not had a reoccurance.

March 15th, 2011, 07:20 PM	#9
bob706 ninjette.org certified postwhore Name: Sean Location: Mary Esther, FL Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.	near the rear of the tank.

March 15th, 2011, 08:21 PM	#10
CZroe CPT Falcon Name: J.Emmett Turner Location: Newnan, GA Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.	This has happened to many of us, usually THOUSANDS of miles apart, which is probably why it hasn't happened to Sean again. We have threads on it already. This is the usual sequence of events: Bike is fully warmed up Tank cooling event (parking the bike ~15 minutes, encounter rain or sudden cold pocket, etc) Ride hard due to the engine being already warm Engine begins running poorly within a block or two until it dies Doesn't start again for several minutes; usually after you've checked all fluids and opened the tank It seems to be when the tank develops a vacuum due to cooling. It has happened to me several times in 20,000 miles and the only time it wasn't after a short cool down was when I encountered cold/rain.

March 15th, 2011, 08:25 PM	#11
areifel ninjette.org member Name: Drew Location: Florida Join Date: Nov 2010 Motorcycle(s): 2009 Ninja 250R Posts: 194	Thanks everyone!!! I primed it for about 30 seconds and she fired right up.