The last two weeks I have had trouble starting my Kohler generator. I have to turn it over it 3 or 4 times before it will keep running on its own. When I first put the boat in the water in March, the generator would start the first time and keep running however it was emitting a lot of blue smoke until it warmed up. I had the marina look at it and a spring was disconnected I believe on the choke. After that, no blue smoke but would start the first time. Now all of sudden it won't stay running on the first try. My guess is the choke is not setting properly until the 3rd or 4th try but I'm no expert. What needs to be done? The generator was completely serviced over the winter including new plugs and has a new impellar.