Rev problems

Kzavis · November 5th, 2012, 11:06 AM

I cannot get my bike to rev past 4-5k RPM. I live in boston and someone stole my license plate and I couldn't ride it for 3-4 weeks and this is what happened afterwards.

Link to original page on YouTube.

&

Link to original page on YouTube.

Any help would be appreciated.

Fappy · November 5th, 2012, 11:55 AM

I had almost the exact same problem...
My first question for you is: Did the bike get wet at all (rain, washing, especially right before you tried to rev it here?)

For now, I think, considering it sat for 3-4 weeks, that you could have a problem with one of your carburetor jets being clogged with the old gasoline. Did you try running any seafoam (or similar cleaner)?

Jiggles · November 5th, 2012, 01:30 PM

If you're having rev problems...

alex.s · November 5th, 2012, 01:41 PM

i would try a sacrificial goat offering first and foremost

Kzavis · November 5th, 2012, 02:50 PM

Quote:

Originally Posted by Fappy

I had almost the exact same problem...
My first question for you is: Did the bike get wet at all (rain, washing, especially right before you tried to rev it here?)

For now, I think, considering it sat for 3-4 weeks, that you could have a problem with one of your carburetor jets being clogged with the old gasoline. Did you try running any seafoam (or similar cleaner)?

Yes my cover fell off numerous times over that time so that is very possible that It got wet. And I ran Seafoam through it for about an hour or so and It did improve. It improved to about 5.5K RPM but still couldnt ride it.
Thanks

Fappy · November 5th, 2012, 03:08 PM

Quote:

Originally Posted by Kzavis

Yes my cover fell off numerous times over that time so that is very possible that It got wet. And I ran Seafoam through it for about an hour or so and It did improve. It improved to about 5.5K RPM but still couldnt ride it.
Thanks

Just so you're aware, I had a problem with my bike after it was left out in the rain.
Similar to yours: it idled okay, but it would rev very slowly and needed full choke; in addition, like yours, trying to rev past 4 or 5k was impossible.

My solution was simply to leave it out in the sun all day to dry. We figured it was an ignition problem (electrical). After a few hours of drying, the bike was 100% fine. Every time it rained, the problem would recur.

Basically I think these bikes' ignition systems are poorly designed, and are prone to being problematic in wet weather sometimes.

If you have water sitting under the seat or around the engine, I'd do my best to bring it somewhere where it can dry out. Try running some more seafoam through a full tank of gas in addition just in case the carbs are indeed clogged, and see if the problem smooths out.

Alex · November 5th, 2012, 03:10 PM

Quote:

Originally Posted by Kzavis

And I ran Seafoam through it for about an hour or so and It did improve.

What did you mean by this; you left it idling for an hour, or went for an hour long ride?

Kzavis · November 5th, 2012, 05:30 PM

Quote:

Originally Posted by Alex

What did you mean by this; you left it idling for an hour, or went for an hour long ride?

I let it idle... I cant ride it at this point. I tried and it maxes at appox 10mph...

Kzavis · November 5th, 2012, 05:36 PM

Quote:

Originally Posted by Fappy

Just so you're aware, I had a problem with my bike after it was left out in the rain.
Similar to yours: it idled okay, but it would rev very slowly and needed full choke; in addition, like yours, trying to rev past 4 or 5k was impossible.

My solution was simply to leave it out in the sun all day to dry. We figured it was an ignition problem (electrical). After a few hours of drying, the bike was 100% fine. Every time it rained, the problem would recur.

Basically I think these bikes' ignition systems are poorly designed, and are prone to being problematic in wet weather sometimes.

If you have water sitting under the seat or around the engine, I'd do my best to bring it somewhere where it can dry out. Try running some more seafoam through a full tank of gas in addition just in case the carbs are indeed clogged, and see if the problem smooths out.

Sitting out in the sun dried it out enough?

Jiggles · November 5th, 2012, 05:48 PM

Quote:

Originally Posted by Kzavis

I let it idle... I cant ride it at this point. I tried and it maxes at appox 10mph...

Don't do that

alex.s · November 5th, 2012, 05:56 PM

idling puts gas through the pilot jet not the main jet. idling wont help the situation when using seafoam. you have to try to rev it up but you dont want to be revving it up standing still (you'll overheat it- it just wasn't meant for revving standing still) so keep it in first and try riding it around... make sure its seafoam with new gas not old gas (old gas might have water in it, or just be too old to use) as you struggle trying to get past 5k is should slowly get better. but idling wont do anything to help it.

Alex · November 5th, 2012, 06:17 PM

Quote:

Originally Posted by Kzavis

I let it idle... I cant ride it at this point. I tried and it maxes at appox 10mph...

Don't let any small motorcycle idle for more than a few minutes. In good conditions the cooling system will be effective enough to avoid damage. But in less than optimal conditions, the cooling system is often not sized to keep the engine in a safe zone for an extended period. What did the temp gauge look like after 20+ minutes of idling?

Fappy · November 6th, 2012, 08:28 AM

Quote:

Originally Posted by Kzavis

Sitting out in the sun dried it out enough?

Since water was my problem -- yes; if you can get it somewhere dry and check to make sure it isn't damp anywhere (this includes water in the gas; seafoam will help with that). I did this back when it was warm out though, in September.

Quote:

Originally Posted by alex.s

idling puts gas through the pilot jet not the main jet. idling wont help the situation when using seafoam. you have to try to rev it up but you dont want to be revving it up standing still (you'll overheat it- it just wasn't meant for revving standing still) so keep it in first and try riding it around... make sure its seafoam with new gas not old gas (old gas might have water in it, or just be too old to use) as you struggle trying to get past 5k is should slowly get better. but idling wont do anything to help it.

This!
You need to ride it a bit under load and under an open throttle. Get someone else who can maybe.

Idling will only help it to idle better... if you want to clear the main jet with the seafoam (sounds like it might be your problem), you have to open it up a bit so gas is pulled through it.

choneofakind · November 6th, 2012, 08:38 AM

Just pull the carbs and clean them.

alex.s · November 6th, 2012, 08:48 AM

Quote:

Originally Posted by Alex

Don't let any small motorcycle idle for more than a few minutes. In good conditions the cooling system will be effective enough to avoid damage. But in less than optimal conditions, the cooling system is often not sized to keep the engine in a safe zone for an extended period. What did the temp gauge look like after 20+ minutes of idling?

i think motorcycle cooling fans should be tied into the speedometer or something. and how come the overheating light is just a light and not a light with a loud annoying buzzer or something

i'm going to hook up my temp light to my horn signal.

ChiefKeif · November 7th, 2012, 06:20 PM

not the battery?

my buddy had the same problem, but after a few times of it his died. we replaced the battery then he was golden.

Kzavis · November 7th, 2012, 06:45 PM

Quote:

Originally Posted by alex.s

idling puts gas through the pilot jet not the main jet. idling wont help the situation when using seafoam. you have to try to rev it up but you dont want to be revving it up standing still (you'll overheat it- it just wasn't meant for revving standing still) so keep it in first and try riding it around... make sure its seafoam with new gas not old gas (old gas might have water in it, or just be too old to use) as you struggle trying to get past 5k is should slowly get better. but idling wont do anything to help it.

Thanks I ran it again and it seemed to work. But I did look like and idiot trying to go above 7mph going back and forth on a one way street. Thanks all for the help

ChiefKeif · November 7th, 2012, 06:49 PM

Quote:

Originally Posted by Kzavis

Thanks I ran it again and it seemed to work. But I did look like and idiot trying to go above 7mph going back and forth on a one way street. Thanks all for the help

hey thats the MGP growler slip on yah? how much do you like it? i just ordered it yesterday

November 5th, 2012, 11:06 AM	#1
Kzavis ninjette.org newbie Name: Keaton Location: Boston Join Date: Nov 2012 Motorcycle(s): 2008 Ninja 250 Posts: 6	Rev problems I cannot get my bike to rev past 4-5k RPM. I live in boston and someone stole my license plate and I couldn't ride it for 3-4 weeks and this is what happened afterwards. Link to original page on YouTube. & Link to original page on YouTube. Any help would be appreciated.

November 5th, 2012, 01:30 PM	#3
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	If you're having rev problems... __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

November 5th, 2012, 01:41 PM	#4
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	i would try a sacrificial goat offering first and foremost __________________________________________________

November 5th, 2012, 05:56 PM	#11
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	idling puts gas through the pilot jet not the main jet. idling wont help the situation when using seafoam. you have to try to rev it up but you dont want to be revving it up standing still (you'll overheat it- it just wasn't meant for revving standing still) so keep it in first and try riding it around... make sure its seafoam with new gas not old gas (old gas might have water in it, or just be too old to use) as you struggle trying to get past 5k is should slowly get better. but idling wont do anything to help it. __________________________________________________

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November 5th, 2012, 11:55 AM	#2
Fappy ninjette.org guru Name: Stephen Location: Philadelphia, PA Join Date: Aug 2012 Motorcycle(s): 2007 Ninja 650R, 2008 Ninja 250R (sold) Posts: 263	I had almost the exact same problem... My first question for you is: Did the bike get wet at all (rain, washing, especially right before you tried to rev it here?) For now, I think, considering it sat for 3-4 weeks, that you could have a problem with one of your carburetor jets being clogged with the old gasoline. Did you try running any seafoam (or similar cleaner)?

November 6th, 2012, 08:38 AM	#14
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Just pull the carbs and clean them.

November 7th, 2012, 06:20 PM	#16
ChiefKeif ninjette.org member Name: Keifer Location: Pennsylvania Join Date: Nov 2012 Motorcycle(s): 08 Ninja 250 Posts: 31	not the battery? my buddy had the same problem, but after a few times of it his died. we replaced the battery then he was golden.