Hesitation when opening throttle. - SV650.org

15-04-09, 08:43 PM

ok on my 1999 curvy tonight while running down the m way at a steady 70 it feels hesitent for a second then picks up again. if im doing some then it doesnt seam to happen. Also it happened a little while comming off the slip road.

i had something similar on the hardy bikers run and it was a bit foggy so im wondering where to start looking?

TSM · 15-04-09, 08:44 PM

what was weather like?

15-04-09, 09:13 PM

slightly chilly/foggy

ophic · 15-04-09, 09:18 PM

tank nearing empty? could be some rubbish from the bottom of the tank being pulled through the carbs.

Biker Biggles · 15-04-09, 09:18 PM

Carb icing.

Mr Speirs · 15-04-09, 10:03 PM

Don't hesistate, just crack the throttle open!!!

16-04-09, 12:23 AM

When did you last get the carbs balanced?

16-04-09, 06:59 AM

I've had a similar thing on my curvy, always when i've been tootling along on part throttle with little load on the engine, especially in the cooler damper weather at the end of winter/start of spring. Didn't seem to matter whether I had a full, part or nearly empty tank but was worse every time I put in normal unleaded as opposed to super. Open the throttle and it was almost like it was struggling to pull in enough juice then would kick in. I put a dose of Wynn's Dry Fuel through a couple of tanks of fuel and had the carbs off and gave them a good blast out with cleaner and it seems to have done the trick

ps - if you need a hand to balance carb's as well give me a shout. i've got a set of gauges here

16-04-09, 07:44 AM

Was the choke fully off, or is the choke cable sticky and holding it slightly on ?.

16-04-09, 11:48 AM

well its run on super unleaded so i hoped carb icing wouldnt be a problem. its only on consistant runs though.

choke appears to be fine.

not had the carbs balanced since september tho.

15-04-09, 08:43 PM	#1
AndyBrad Guest Posts: n/a	Hesitation when opening throttle. ok on my 1999 curvy tonight while running down the m way at a steady 70 it feels hesitent for a second then picks up again. if im doing some then it doesnt seam to happen. Also it happened a little while comming off the slip road. i had something similar on the hardy bikers run and it was a bit foggy so im wondering where to start looking?

15-04-09, 08:44 PM	#2
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	Re: hesitation what was weather like? __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

15-04-09, 09:13 PM	#3
AndyBrad Guest Posts: n/a	Re: hesitation slightly chilly/foggy

15-04-09, 09:18 PM	#4
ophic Member Mega Poster Join Date: Jan 2004 Location: Whyteleafe Posts: 3,395	Re: hesitation tank nearing empty? could be some rubbish from the bottom of the tank being pulled through the carbs. __________________ Silver SV650SK3, Fuel exhaust

15-04-09, 09:18 PM	#5
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: hesitation Carb icing. __________________ On a clear day we stand there and look further than the ordinary eye can see.

15-04-09, 10:03 PM	#6
Mr Speirs Member Mega Poster Join Date: Jul 2008 Location: Northampton Posts: 2,218	Re: Hesitation when opening throttle. Don't hesistate, just crack the throttle open!!! __________________ Smokey Black Burnty 02 - Racetech Smoulderlators + .90kg BBQ Springs, zx10r shockingly toasted, Conti Road Attacks heat up very nicely, R&G Crash Bungs but what f**king use are they, No Colour Matched Hugger, Flame Extenda, Beowulf Titainium Oval Flame Thrower.

16-04-09, 12:23 AM	#7
gettin2dizzy Guest Posts: n/a	Re: Hesitation when opening throttle. When did you last get the carbs balanced?

16-04-09, 06:59 AM	#8
charlie13 Guest Posts: n/a	Re: Hesitation when opening throttle. I've had a similar thing on my curvy, always when i've been tootling along on part throttle with little load on the engine, especially in the cooler damper weather at the end of winter/start of spring. Didn't seem to matter whether I had a full, part or nearly empty tank but was worse every time I put in normal unleaded as opposed to super. Open the throttle and it was almost like it was struggling to pull in enough juice then would kick in. I put a dose of Wynn's Dry Fuel through a couple of tanks of fuel and had the carbs off and gave them a good blast out with cleaner and it seems to have done the trick ps - if you need a hand to balance carb's as well give me a shout. i've got a set of gauges here

16-04-09, 07:44 AM	#9
srx600 Guest Posts: n/a	Re: Hesitation when opening throttle. Was the choke fully off, or is the choke cable sticky and holding it slightly on ?.

16-04-09, 11:48 AM	#10
AndyBrad Guest Posts: n/a	Re: Hesitation when opening throttle. well its run on super unleaded so i hoped carb icing wouldnt be a problem. its only on consistant runs though. choke appears to be fine. not had the carbs balanced since september tho.

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