Fuel Flow Problem.... and a Solution!

[husabob]

All,
I've been busy prepping my '65 CL77 for an all night Timed Road Run this weekend, and my right cylinder had been giving me fits. The cylinder would cut in and out like it was an ignition problem, but when I dropped the fuel bowl, it would be empty. Another symptom was the engine racing from idle. The float and the valve moved freely. Blowing air through the line did not reveal any blockage. The fuel lines are new, with small inline filters. The petcock screen had been cleaned. After removing the fuel line and banjo fitting from the side of the carb, I removed the banjo bolt and discovered a small screen inside the fitting! It was clogged. Since I'm running an inline filter, I've chosen to eliminate this screen. The bike runs fine now. I suspect the racing was caused by the carb going lean as it ran out of fuel. Bob B

[LOUD MOUSE]

Removing that screen was a good thing as HONDA discontinued it with the 1967 production bikes. .............lm

All,
I've been busy prepping my '65 CL77 for an all night Timed Road Run this weekend, and my right cylinder had been giving me fits. The cylinder would cut in and out like it was an ignition problem, but when I dropped the fuel bowl, it would be empty. Another symptom was the engine racing from idle. The float and the valve moved freely. Blowing air through the line did not reveal any blockage. The fuel lines are new, with small inline filters. The petcock screen had been cleaned. After removing the fuel line and banjo fitting from the side of the carb, I removed the banjo bolt and discovered a small screen inside the fitting! It was clogged. Since I'm running an inline filter, I've chosen to eliminate this screen. The bike runs fine now. I suspect the racing was caused by the carb going lean as it ran out of fuel. Bob B

[mike horvath]

Now this is a golden nugget piece of info, and I don't think I've ever come across it on the forum. I've got a 66 and you can bet that checkin' it out will be on the to do list. BTW...not to say it isn't here, just never read it. Thanks for the posts Bob and Ed.

[husabob]

As you can imagine, I've had my seat and tank off several times during this process. Last year, I installed a Motion Pro dual shutoff quick disconnect in the balance tube that connects the two halves of the tank, and it really simplfies the tank removal process. I made the hose long anough so it has a bit of a bow to it, and I can lift the tank high enough to easily get my hands on the fitting. The fitting releases by pushing on a "guillotine" type valve until you hear or feel a click, and I positioned it so I can visually confirm it is fully seated when I reconnect the halves. It'a a real labor saver, and makes a messy job clean and painless. Bob B