Honda running rough? any help please

cru11 · 07-07-2011, 10:26 AM

Hi guys, i need some serious advice on my 1975 xl125,it is running very poor,it will fire right up but will hesitate for a second when accelerating and this happens maybe once or twice each gear also when i give it LESS than quarter throttle at idle it wants to die??? and when i pull in the clutch it wants to die easy also? any help? maybe the air fuel mixture screw? needle placement? if it is the air/fuel mixture screw what is the factory setting because i have heard numerous people say different things.
thanks guys any help would be great.

lrutt · 07-07-2011, 12:03 PM

what about a plug replacement or a good carb cleaning? if that gas sits in there for a week it could start messing things up. Just the way this crappy fuel is these days.

cru11 · 07-07-2011, 03:05 PM

carb has been cleaned and cleaned and cleaned and the plug is fairly new maybe il get a new one later today

thanks for the help

south · 07-07-2011, 03:24 PM

No offense, and not to insult your intelligence, but there can be a difference between "cleaning" a carb--spraying it down with carb/choke cleaner--and fully disassembling and "soaking" a carb--i.e., fully submerging a carb in parts cleaner for 2-3 days. Carb bodies typically have any number of pissant little fuel passageways that easily clog and don't generally unclog without an extended soak. What you describe definitely sounds like a fueling issue; a full carb disassembly and 3 day soak would surely set it right--the full disassembly is very important because any nonmetallic carb components--e.g., plastic pieces, rubber gaskets/o-rings--won't survive such an extended submersion.

cru11 · 07-07-2011, 05:00 PM

okay will try soaking it again for a few days,any other ideas if that doesn't do the trick? how many turn out should the mixture screw be?

thanks again guys

07-07-2011, 10:26 AM	#1
cru11 ^OP Adventurer Joined: Sep 2010 Oddometer: 26	Honda running rough? any help please Hi guys, i need some serious advice on my 1975 xl125,it is running very poor,it will fire right up but will hesitate for a second when accelerating and this happens maybe once or twice each gear also when i give it LESS than quarter throttle at idle it wants to die??? and when i pull in the clutch it wants to die easy also? any help? maybe the air fuel mixture screw? needle placement? if it is the air/fuel mixture screw what is the factory setting because i have heard numerous people say different things. thanks guys any help would be great.

07-07-2011, 12:03 PM	#2
lrutt SILENCE.....i kill you Joined: Jul 2005 Oddometer: 796	what about a plug replacement or a good carb cleaning? if that gas sits in there for a week it could start messing things up. Just the way this crappy fuel is these days. __________________ 2004 Harley Sporster 1200C, 2001 Ducati M900, 2001 Honda XR650L, 1994 Harley Heritage, 1978 Honda CB750K with sidecar, 1977 Moto Guzzi 850 LeMans, 1976 Honda CB750K, 1965 Honda 305 Dream, 1973 Norton 850 Commando, 1971 Triumph Trophy 650, 1970 Honda Trail 90, 1970 Triumph Tiger 650, 1973 Honda Z50, 1984 Yamaha Virago 1000, 1981 Honda Passport 70, 1970 Suzuki T250, 1971 Yamaha RT1 360

07-07-2011, 03:24 PM	#4
south Gnarly Adventurer Joined: Mar 2011 Location: Florida Oddometer: 176	No offense, and not to insult your intelligence, but there can be a difference between "cleaning" a carb--spraying it down with carb/choke cleaner--and fully disassembling and "soaking" a carb--i.e., fully submerging a carb in parts cleaner for 2-3 days. Carb bodies typically have any number of pissant little fuel passageways that easily clog and don't generally unclog without an extended soak. What you describe definitely sounds like a fueling issue; a full carb disassembly and 3 day soak would surely set it right--the full disassembly is very important because any nonmetallic carb components--e.g., plastic pieces, rubber gaskets/o-rings--won't survive such an extended submersion. __________________ '88 KLR650 Project Thread: http://www.advrider.com/forums/showthread.php?t=667727 '01 VFR800, '03 CBR600RR, '78 CX500, '04 EX250, '82 XJ650L, '75 CB360. Projects: '89 GS500, '86 ZX1000R, '85 XL350R, '71 CB750, '78 GL1000,'90 CH250

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07-07-2011, 03:05 PM	#3
cru11 ^OP Adventurer Joined: Sep 2010 Oddometer: 26	carb has been cleaned and cleaned and cleaned and the plug is fairly new maybe il get a new one later today thanks for the help

07-07-2011, 05:00 PM	#5
cru11 ^OP Adventurer Joined: Sep 2010 Oddometer: 26	okay will try soaking it again for a few days,any other ideas if that doesn't do the trick? how many turn out should the mixture screw be? thanks again guys