I'm a little late to the party, but my '98 Johnson 200 Ocean Pro shows the same symptoms with a cold start. I have also started the habit of starting the motor at home with the hose/muffs! Makes for a much lower stress launch at the boat ramp. Of course i still get a few looks when my puff of blue smoke wafts across the dock
Once warmed up, this motor has never given me a bit of trouble, but some days it takes a few minutes to get her fired up.
Is that just common with Johnny-Rudes?