New proud owner of an '84 KLR600 2300 miles give or take - great condiiton - oh, except it doesn't run. Last ran in spring - loss of power and weird engine noise PO shut it off - has sat since. Sticky valve? Doohicky issue? where should I look first? I will check compression amd clean the carb. Re direct to older thread if appropriate can't be the first to ask this. Thanks!!