Last weekend i had my boat out for the first time and i had some problems starting it when cold.It is a 1990 Johnson 150 with new plugs , stator, powerpack, battery. I really think im doing something out of sequence for a cold start. This ignition has the push key choke and im not sure how to engage it? Just push it once ? hold it? what? Also what about throttle placement.? One the engine was warm i had no problems for the entire day. Just when it was cold. Thanks for any help.