Questionwhat is the proper procedure/adjustment order to dial start and dial in a newly rebuilt carb on this monster???I've got GOOD, balanced compression...the rebuild was fine but I'm pulling my hair out trying to get it running......PLEASE help me....
AnswerChris, as far as I know the 1983 models were CB1000Cs, which replaced the CB900C editions of the previous three years.
If your bike is stock and includes the automatic fuel valve control, you probably haven't gotten enough fuel to the carbs to allow the bike to fire up. The fuel valve only allows fuel on when there is a vacuum signal (from #2 carb, usually) to open the diaphragm and allow fuel to flow to the float bowls. If you pull the vacuum like off the carb fitting and apply vacuum to it with the petcock in the ON position (or reserve if you are low on fuel), you should be able to fill the float bowls in a minute or two. You can just put a little adapter and piece of small diameter hose onto the end of the control hose and either suck on it with your mouth or use a vacuum pump to crack the valve open, holding it for a couple of minutes. You can check float bowl filling by loosening the float bowl drain screw, watching for fuel to come out. Catch it with rags or a container and be careful of open flames, etc. while you are working with the fuel system.
http://www.cmsnl.com/honda-cb900c-900-custom-1982-usa_model7250/partslist/E++21.
I imagine that you have run the battery down, trying to crank the engine over to get it started, so fully charge the battery again before you try to restart the bike. Make sure that you have good spark to the plugs, of course. Spark plug caps should be checked for about 5k ohm resistance values, as well.
I will assume that your "good balanced compression" readings are in the 150-175 psi range with throttle held wide open.
You will need some synchronizing tools to balance the carbs. Vacuum gauges and small socket/screwdrivers are needed to tweak the carb linkage fittings as you synchronize the full set.
You didn't say if the bike was running or not, previously. In some cases the diaphragm in the auto fuel valve can fail, which causes a small vacuum leak and reduces/restrict fuel flow to the carb rack.
Bill Silver
