Throttle sticking, need help

WiffleBiscuit · September 1st, 2014, 02:24 PM

Hello everyone, hoping I can get some insight from someone more knowledgeable than me. Just installed a full exhaust, k&n filter and removed snorkel. Rejetted the carb with dynopro 98 main jet and dynopro needles and spacers. The problem is that the throttle is sticking badly now. I have tried every idle adjustment from 2 turns to 4 turns, adjusted the throttle cables at both the carb and the grip multiple times, and made sure that the cables aren't getting hung anywhere. I have read a few places that a lean mixture will cause the throttle to stick, but I wouldn't expect that it would stick this badly. It takes about 4 seconds for the bike's rpm to drop from 5k to idle when reving in neutral. Any ideas from anyone that has gone through a similar issue? I appreciate any help, thanks.

CC Cowboy · September 1st, 2014, 02:41 PM

Cable sticking? Not hung up but no lube in tube!

WiffleBiscuit · September 1st, 2014, 03:16 PM

I have lubed the cables and the throttle bracket on the carb returns to the neutral position when I let the throttle grip go, but the revs still fall very slowly. Is it possible that some part of the carb is failing to shut off after throttle? I'm not very familiar with the linkage of the carbs, could it be something with that?

Ninjinsky · September 1st, 2014, 03:59 PM

Its probably not the throttle sticking, its an air leak somewhere.
Loosen and resettle the rubber manifolds and also check all the vac hoses on the carbs.

WiffleBiscuit · September 1st, 2014, 05:11 PM

Ok, I will reset all of the hoses and see if that remedies the problem.

September 1st, 2014, 02:24 PM	#1
WiffleBiscuit ninjette.org newbie Name: Zeke Location: Amarillo, TX Join Date: Aug 2014 Motorcycle(s): 2010 Ninja 250r, 2000 Honda CBR600F4 Posts: 3	Throttle sticking, need help Hello everyone, hoping I can get some insight from someone more knowledgeable than me. Just installed a full exhaust, k&n filter and removed snorkel. Rejetted the carb with dynopro 98 main jet and dynopro needles and spacers. The problem is that the throttle is sticking badly now. I have tried every idle adjustment from 2 turns to 4 turns, adjusted the throttle cables at both the carb and the grip multiple times, and made sure that the cables aren't getting hung anywhere. I have read a few places that a lean mixture will cause the throttle to stick, but I wouldn't expect that it would stick this badly. It takes about 4 seconds for the bike's rpm to drop from 5k to idle when reving in neutral. Any ideas from anyone that has gone through a similar issue? I appreciate any help, thanks.

September 1st, 2014, 02:41 PM	#2
CC Cowboy ninjette.org certified postwhore Name: Whodat Location: Ware Is.,MA Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot. MOTM - Mar '13, Jun '14	Cable sticking? Not hung up but no lube in tube! __________________________________________________ If everything seems under control; you're just not going fast enough!

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September 1st, 2014, 03:16 PM	#3
WiffleBiscuit ninjette.org newbie Name: Zeke Location: Amarillo, TX Join Date: Aug 2014 Motorcycle(s): 2010 Ninja 250r, 2000 Honda CBR600F4 Posts: 3	I have lubed the cables and the throttle bracket on the carb returns to the neutral position when I let the throttle grip go, but the revs still fall very slowly. Is it possible that some part of the carb is failing to shut off after throttle? I'm not very familiar with the linkage of the carbs, could it be something with that?

September 1st, 2014, 03:59 PM	#4
Ninjinsky ninjette.org certified postwhore Name: Paul Location: UK Join Date: Apr 2014 Motorcycle(s): Ninja 250, Yamaha RS200 (classic) Posts: A lot.	Its probably not the throttle sticking, its an air leak somewhere. Loosen and resettle the rubber manifolds and also check all the vac hoses on the carbs.

September 1st, 2014, 05:11 PM	#5
WiffleBiscuit ninjette.org newbie Name: Zeke Location: Amarillo, TX Join Date: Aug 2014 Motorcycle(s): 2010 Ninja 250r, 2000 Honda CBR600F4 Posts: 3	Ok, I will reset all of the hoses and see if that remedies the problem.