1997 35hp Johnson model J35QLEUR seems to be losing spark somehow. After its been sitting awhile, maybe after disconnecting and reconnecting the battery, it will start. Sometimes run for a minute, sometimes just a few seconds...then stop like it was turned off. When I try starting it again there's no spark. Thought it could be the kill switch so I replaced it, didn't help. It's been doing this for months now. What part would control spark on and off like this? Thanks, Don.
