Hello and welcome to FixYa!
Yes there can be expired fuel on the bowl. You may want to clean it thoroughly as a first course of action. Please do check and replace the spark plugs and plug wires too for they can be worn out which may cause irregularities on current supply.
If the problem still persists, please do check the vacuum lines too. If you have disconnected or worn out vacuum hoses you'll have vacuum leakage. If that's the case, please have it replaced to resolve the issue. Wish you all the best on this and hope to get your bike back to it's normal running operation.
Hope this helps and thank you for using FixYa! Have a good one!
103 views
Usually answered in minutes!
Found several carburetor boot clamps that were loose. Will tighten them up, put the machine back together, fire it up & see if it runs better. Thanks!
×