The bike has 7200 miles on it. I replaced the plugs already, I cleaned the air filter, yesterday I drained the tank and refilled it fresh. There is one thing that's strange. Yesterday I tried doing the oil in a tube vacuum test to sync the carbs and the second i'd crank it, the oil would go straight toward the right side carb. As if there was no vacuum to the left carb. I've been suspect that this line has been weak and not operating the petcock correctly. What are some other suspect vacuum lines? What could be causing the left carb to lack vacuum pressure?
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