CB250 Fueling issue??

[Corse1]

I will outline the symptoms.
1962 CB 250 twin carb

Bike will only run on one cylinder for about half a kilometre then cough sputter and run fantastic from then on. if you turn the motor off and restart it purrs like a kitten. If you leave the bike sit for a couple of hours the same thing will happen with it running on one cylinder for around half a kilometre.

Always the LH cylinder. Has new spark plugs and carbs have been cleaned with new o rings in the flange connections.

Any ideas are appreciated!
Nick

[rustys]

Hi Nick. If you can't solve your problem, this is a good forum to go to for help on your CB Honda, iam sure someone can help you.

www.hondatwins.net

Also for parts try www.4into1.com

[malcy25]

I will outline the symptoms.
1962 CB 250 twin carb

Bike will only run on one cylinder for about half a kilometre then cough sputter and run fantastic from then on. if you turn the motor off and restart it purrs like a kitten. If you leave the bike sit for a couple of hours the same thing will happen with it running on one cylinder for around half a kilometre.

Always the LH cylinder. Has new spark plugs and carbs have been cleaned with new o rings in the flange connections.

Any ideas are appreciated!
Nick

90% of carb problems are electrical......I'd be looking beyond sparkplugs. Duff Condenser or dry connection etc in the wiring. I'm assuming it is still points.

[Corse1]

Hi Nick. If you can't solve your problem, this is a good forum to go to for help on your CB Honda, iam sure someone can help you.

www.hondatwins.net

Also for parts try www.4into1.com

Yes I have asked on there,. Plenty of views but no reply as yet. Cheers for that though. Might give it a bump.

[Corse1]

90% of carb problems are electrical......I'd be looking beyond sparkplugs. Duff Condenser or dry connection etc in the wiring. I'm assuming it is still points.

Yep still points so will have a look at that. Cheers
Nick.