Help please!

No exactly, that's what he did prior, now here's where I am now, he hasnt touched it since I got home and it started crapping.
 
OK. I'd double-check float heights as that will definitely cause the problems you're having.

Float heights will affect how much fuel is getting sucked up by the carbs. Too much fuel and you're too rich. That causes black plugs and poor engine performance once things warm up.
 
Noob question here but how exactly do I measure/adjust float height and whats a good general setting it should be at?
 
Sonreir said:
Check your service manual. It differs by carb and bike.

Even something like a CB350 has over 5 different carbs fitted that have different specs. The height, as Sonreir said, is specific to both the carburetor model and the bike model. Enough people get this wrong that even an otherwise good mechanic may have missed it.v
 
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