Unresponsive Throttle

xaple · February 28th, 2013, 08:13 AM

Back story: I had a gas tank that had a huge dent/bend/crease in it that I had been using for the past 2 or 3 months. I discovered that a tank in such a condition could have rust on the inside that would cause problems with the carbs, such as clogging.

I now have a new tank that's in pristine condition but I'm not happy with the way my throttle is responding. If i pull in the clutch and try to give it a lot of gas it doesn't really do anything, like its coughing or something. Same thing happens when I'm moving or not moving. If i try and get a fast start sometimes it will pick up and go other times it will kind of lag a little then kick in.

I also have a full Area P exhaust system that I installed myself with a stage 2 Dynojet kit. I believe i have the #96 jets in (not 100% positive) with the idle screws turned out 2.5 turns and a washer under each needle. Kerry (AreaP owner) walked me through the whole process personally so i cant imagine my tune up was the problem being as it hasn't always been this way.

does this sound like a problem cleaning the carbs could fix? Or is it something more?

Motofool · February 28th, 2013, 08:24 AM

Check this thread first:

http://www.ninjette.org/forums/showthread.php?t=124374

DaBlue1 · February 28th, 2013, 08:26 AM

Have you checked to see if your filter is dirty or snorkel is blocked?
http://www.ninjette.org/wiki/Troubleshooting_Guide

xaple · February 28th, 2013, 09:04 AM

Quote:

Originally Posted by DaBlue1

Have you checked to see if your filter is dirty or snorkel is blocked?
http://www.ninjette.org/wiki/Troubleshooting_Guide

Cleaned my filter out not to long ago and I removed the snorkel. Bike has 9k miles btw

xaple · February 28th, 2013, 09:13 AM

Quote:

Originally Posted by Motofool

Check this thread first:

http://www.ninjette.org/forums/showthread.php?t=124374

where exactly is http://www.hondaatvforums.net/forums...ash_filter.jpg
that thing

DaBlue1 · February 28th, 2013, 09:29 AM

Quote:

Originally Posted by xaple

where exactly is http://www.hondaatvforums.net/forums...ash_filter.jpg
that thing

Here

xaple · February 28th, 2013, 09:50 AM

Quote:

Originally Posted by DaBlue1

Here

thank you

Looks like i got a project for the weekend

iZapp · March 2nd, 2013, 09:17 AM

if your fuel filter is clogged, it would imply that the bowls WOULD be full of fuel, at least until the demand for fuel by the engine exceeded the flow of fuel through the filter. At that point the fuel level in the float bowls would begin to drop and eventually the motor would begin to bog.

so, if the engine starts hard, or will only run with choke, or will not accept any throttle, then i would suspect the tiny primary jets (aka pilot jet) inside the bowl. this is very likely.

if it revs up, but falls on its face then the main jet is the issue. not likely.

if it revs up, runs ok, but seems to lack some power, then air delivery is the issue like filter.

hope that helps.

DamonDanner · June 28th, 2015, 04:10 PM

something to check...mine did the same thing so I went to check the little fuel filter...my petcock was on the "reserve setting" took off the fuel line and almost NO GAS FLOW...put it to the down position and gas really flowed...don't know if I got a piece trash in that tube or what, bout to go test it now... mid range was really boggy, but other than that is seemed OK.

test ride! Yes...reserve setting wasn't letting enough gas get through...now how to fix that? I blew through the hose into the tank...still plugged.

Ghostt · June 28th, 2015, 04:58 PM

Quote:

Originally Posted by DamonDanner

something to check...mine did the same thing so I went to check the little fuel filter...my petcock was on the "reserve setting" took off the fuel line and almost NO GAS FLOW...put it to the down position and gas really flowed...don't know if I got a piece trash in that tube or what, bout to go test it now... mid range was really boggy, but other than that is seemed OK.

test ride! Yes...reserve setting wasn't letting enough gas get through...now how to fix that? I blew through the hose into the tank...still plugged.

FYI,

NewGen doesn't have a reserve, it has, ON, PRI, OFF. no reserve. Also remember that it's a vacuum peacock, so if the engine isn't running, and the petcock is set to ON , no fuel should flow, that's why there is a PRI /prime, thus allows fuel to flow without vacuum.

PreGen doesn't have a prime, just ON, RES, OFF and vacuum is needed all the time.

DamonDanner · June 28th, 2015, 05:01 PM

hmmmmm... well in the "on" position it ran normally, will switch back to "prime" and see if it acts up again... thank you for the tech info on that!

Perhaps I have my positions on the petcock confused? Arrow down is on correct? "3 oclock" would be prime?

Ghostt · June 28th, 2015, 05:09 PM

Quote:

Originally Posted by DamonDanner

hmmmmm... well in the "on" position it ran normally, will switch back to "prime" and see if it acts up again... thank you for the tech info on that!

Perhaps I have my positions on the petcock confused? Arrow down is on correct? "3 oclock" would be prime?

Not sure on the NewGen, but with the engine off, you should have no fuel flow when set to ON, only PRIME Will allow fuel to flow.

If fuel is flowing with the petcock in ON, then it's time to rebuild the petcock.

DamonDanner · June 28th, 2015, 05:14 PM

ok...had positions wrong...it's operating normally!

Ghostt · June 28th, 2015, 05:38 PM

Quote:

Originally Posted by DamonDanner

ok...had positions wrong...it's operating normally!

good deal

February 28th, 2013, 08:13 AM	#1
xaple ninjette.org guru Name: Daniel "God" Location: South Florida Join Date: Aug 2012 Motorcycle(s): Ninja 250 Posts: 326	Unresponsive Throttle Back story: I had a gas tank that had a huge dent/bend/crease in it that I had been using for the past 2 or 3 months. I discovered that a tank in such a condition could have rust on the inside that would cause problems with the carbs, such as clogging. I now have a new tank that's in pristine condition but I'm not happy with the way my throttle is responding. If i pull in the clutch and try to give it a lot of gas it doesn't really do anything, like its coughing or something. Same thing happens when I'm moving or not moving. If i try and get a fast start sometimes it will pick up and go other times it will kind of lag a little then kick in. I also have a full Area P exhaust system that I installed myself with a stage 2 Dynojet kit. I believe i have the #96 jets in (not 100% positive) with the idle screws turned out 2.5 turns and a washer under each needle. Kerry (AreaP owner) walked me through the whole process personally so i cant imagine my tune up was the problem being as it hasn't always been this way. does this sound like a problem cleaning the carbs could fix? Or is it something more?

February 28th, 2013, 08:24 AM	#2
Motofool 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	Check this thread first: http://www.ninjette.org/forums/showthread.php?t=124374 __________________________________________________ *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

June 28th, 2015, 05:01 PM	#11
DamonDanner ninjette.org newbie Name: Beau Location: Baton Rouge Join Date: Jun 2015 Motorcycle(s): 2010 Ninja 250 Posts: 9	Prime hmmmmm... well in the "on" position it ran normally, will switch back to "prime" and see if it acts up again... thank you for the tech info on that! Perhaps I have my positions on the petcock confused? Arrow down is on correct? "3 oclock" would be prime?

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February 28th, 2013, 08:26 AM	#3
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	Have you checked to see if your filter is dirty or snorkel is blocked? http://www.ninjette.org/wiki/Troubleshooting_Guide

March 2nd, 2013, 09:17 AM	#8
iZapp former ninja 250'er Name: Geo Location: NE Ohio Join Date: Jan 2013 Motorcycle(s): Aprilia 1000R, CRF450, CBR600RR tracktoy, Ninja 250 -- GONE!!!!! Posts: 153	if your fuel filter is clogged, it would imply that the bowls WOULD be full of fuel, at least until the demand for fuel by the engine exceeded the flow of fuel through the filter. At that point the fuel level in the float bowls would begin to drop and eventually the motor would begin to bog. so, if the engine starts hard, or will only run with choke, or will not accept any throttle, then i would suspect the tiny primary jets (aka pilot jet) inside the bowl. this is very likely. if it revs up, but falls on its face then the main jet is the issue. not likely. if it revs up, runs ok, but seems to lack some power, then air delivery is the issue like filter. hope that helps.

June 28th, 2015, 04:10 PM	#9
DamonDanner ninjette.org newbie Name: Beau Location: Baton Rouge Join Date: Jun 2015 Motorcycle(s): 2010 Ninja 250 Posts: 9	something to check...mine did the same thing so I went to check the little fuel filter...my petcock was on the "reserve setting" took off the fuel line and almost NO GAS FLOW...put it to the down position and gas really flowed...don't know if I got a piece trash in that tube or what, bout to go test it now... mid range was really boggy, but other than that is seemed OK. test ride! Yes...reserve setting wasn't letting enough gas get through...now how to fix that? I blew through the hose into the tank...still plugged.

June 28th, 2015, 05:14 PM	#13
DamonDanner ninjette.org newbie Name: Beau Location: Baton Rouge Join Date: Jun 2015 Motorcycle(s): 2010 Ninja 250 Posts: 9	ok...had positions wrong...it's operating normally!