I have a 1969 Johnson 55hp outboard. It ran great in the yard but when we took it out it immediately stalled under any load. Now it will not start at all. The compression is 120 on all three cylinders I'm sure that's adequate. Points look so so could probably use a scraping and gaping. I had a 71 Johnson with no spark and it turned out to be the ignition switch. Any possible ideas I might be missing or is there anything else to check. Thanks

