SOHC.co.uk Forums > CB350/400
400four choke
yorky10:
can any of you fellow members give me a clue as to why my 400four will only run on full choke,carbs have been ultrasonic cleaned,yorky10
Bitsa (Ralph Wright - RIP):
Yorky,
Defiantly lack of fuel.In my experience do not rely on ultra cleaning stuff.Had my 750 ones done still ran like crap.Bought a can of carb cleaner and squirted down every hole I could find then high pressure air loads of tiny bits emerged.Also check the main tube what the needle goes up and down in.On the air screw make sure the hole at the bottom is clear too.Then float heights critical.
Hope this gives you help.
Cheers
Bitsa
Rozabikes Tim:
Had similar issues on my 400/4 recently when carbs cleaned (manually). However hadn't given enough attention to air pilot jets. - carb cleaner / air line sorted it.
PS where are you in Derbyshire?
Tim
yorky10:
hi tim I live southnormanton.not far from alfreton,cheers for info I will try anything,yorky
Rozabikes Tim:
Spooky - guess where I live. Broadmeadows / sth. Normanton.
Small world etc.!
Tim
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