Re: Valve Clearances

Posted by wernwilk on May 15, 2012; 12:43am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Valve-Clearances-tp3972856p3987106.html

so I checked the valve clearances, all good.
then checked ignition timing with the strobe, all correct plus the advance works.
Next I synched up the carbs using the correct gauges, then tweaked the air/fuel screws by ear to get the optimum revs at idle.

sounds ok except there is a stumble as i give it some gas, its almost enough to stall the engine.

I have been through the carbs twice and blown all through and checked float heights as a matter of course.

The bike was standing for a long time and did have some debris in the float bowls however as i said i cleaned the carbs thoroughly...twice!

I am running the bike on the bench using a remote resorvoir which rules out any tank or filter problems.

also, holding my hand over the exhausts there is slightly less gas out of 1 and 4 cylinders which made me think of a possible coil problem but it honestly feels more fuel to me....

any ideas people???

thanks.