2008 Suzuki 90 HP 4 stroke. Cranks instantly in morning. but once in while on lake it just cranks and cranks 25/30 seconds and will wind up having choke it. Seems to happen after fairly long run. Normally never have to choke it even if has been sitting for days just turn key and its running. But long cranking just happens once in while. Most of time cranks quicker than you can turn the key. Any ideas is it something to worry about. May not happen once a day and some days not at all. Thanks for input.