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Turns out that the tiny washer I missed really didn't have anything to do with the problem. But I fixed that anyway.

The culpret? Clogged needle jets! Apparently, some gunk got back down there after the rebuild. But after cleaning them out again, she's working just fine.

Now I need to balance the ...

Update: Next weekend I'll finally be able to bring the bike home, so I can really work on it. I'm thinking I must have reassembled the carbs wrong. There's just no other explanation for it.

There is no vacuum or intake leak.

New plugs, decent spark.

Choke is operating correctly, when all the ...

One quick question, since I can't get to the bike till next weekend - I'm just thinking.

If the needle circut was lean in both carbs (real lean) would that explain this type of behavior?

Thanks!

I'm definately suspicious of the carbs still being dirty. I'll have to rip them apart again and see what I missed. It's just rather hard to see if those microscopic holes are open or not. I followed my shop manual, but it wasn't very thorough (though I thought I was). Also, I didn't use a carb dunk ...

Hi everybody, long time reader, but this is my first post. I'm having some serious issues with my bike. It is a '81 Honda CM400c, it sat for 4 years. I cleaned the carbs, changed the oil, put in a new battery and fresh gas, and fired her up.

She runs, but she runs very poorly. Sometimes it will ...