SOHC.co.uk Forums > CB500/550
Fuel Height
Steris:
Well all 4 carbs have had 2 hours in the ultrasonic bath. I have checked and re checked all of the jets and ports and everything is clear. I have blasted acetone through the slow pilot ports and its shooting through great, out the little jet in front of the slide and out the jet port and air intake port. Rubbers all replaced and float height set to 22mm checked and rechecked. I have balanced the carbs and rechecked the timing and valve gaps, it know ticks over at 900 with the air bleed screws wound 3 turns out but has no guts below 3000 rpm it just dies if you don't rev the nuts of it which suggests its only running on the main jets. I am now at a loss. Might have to spend some money on a another set of carbs :( Any advice would be greatly received
K2-K6:
Turn the air screws to 1 1/4 out and try it as straight comparison with nothing else altered to see what it does.
Steris:
Hi and thanks for the reply
I have had the air bleed screws set from 0 to 3 turns out and 3 turns out seems to be the best, it even runs with the air bleed screws completely removed :)
K2-K6:
Have you verified all air "vent" passages into the float bowls?
Try blowing into the overflow tubes to see if they are clear.
Something's odd, but must become apparent through inspection.
K2-K6:
Ignition advance and retard operation verified as ok?
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