Re: Problem of the year!
Posted by
Piute on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Problem-of-the-year-tp3893671p3925422.html
Re-run wrote
If you are not getting #2, then most likely your idle circuit is plugged. People "clean" these carbs but most never know to pull the idle jets out and the fuel screws and clean in there. The jet particularly need a physical cleaning. A strand of copper wire run though each and every hole along with carb spray.
Also, pop off the bottom of the accel pump and pull out the pump and clean all the holes and such there. Make sure both ears of the pump are open. If you have an aftermarket one, sometimes one comes closed.
Now once you have everything back together, the backside(engine side) of the slides should all be set to 1/8 inch or so to give a rough "bench" sync. Mount then back on and hook up fuel. Leave off the airbox and turn on the fuel. Give the throttle a twist and you should see a stream of gas shoot into the 4 carbs from the brass nozzles at the front of the carbs. This verifies the accel pump is active. The manual states the gap for the pump. It is something like .008 inches. If you do not have this gap, it will not pump right.
At this point, you should be ready to fire. IF the issue still occurs, swap the wires from 2 and 3 and try again. If the issue stays, swap the plugs. If it still stays, then something is still boned in the carb. You DID set the floats to 14-15 mm right?
My KEY-TOPS are 14-15 so be sure of yours 1st off ,getting mine on this wkend myself I hope.
1977 CB750 F2 Super Sport
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