hey guys,
i got into an accident about 2 1/2 months ago on my 1976 cb550f. the bike didn't appear to sustain too much damage, just the brake/clutch levers and a dent in the tank where the bars came back an hit it (clubman bars). it sat on it's side running (clutch side) for a few minutes until my roommate picked it up. i didn't touch the bike for about a month because my fingers were broken and i woudn't be able to ride but when i finally started it, it started right up, ran for about a minute (maybe less) then died.
I decided to rebuild the carbs, which i did two days ago, and then i put them back on (i was only able to bench sync the carbs) and gave it a go. after about 2 minutes of kicking, it finally started (choke all the way on). the engine started racing, i pulled back the choke a bit and then it slowed down, then died. i've gone through this about a dozen times, trying to alter how much i pull back the choke, where the idle screw is, giving it gas, etc. always the same thing.
when it's dying, there is a knocking sound that i'm not sure what it is. i pulled the plugs and they are very black and powdery.
some things about the bike :
it has a Suzuki GSXR pipe on it
110 mains
no air filter (the PO pulled them off and i haven't gotten new pods yet, although it ran great before the accident without them)
dyna ds1-2 ignition
right before the accident i had rebuilt the carbs and put the dyna ignition on and it was running great.
thanks in advance
jason
