We have a 140hp Chrysler outboard "new to us" We think it sat for 10 years without being started. We have removed the old fuel and checked all the plugs but when we try to start it, it turns over but there is no spark to any of the spark plugs. We are not sure what test to run to figure out what needs to be repaired. Can you please advise, we would really love to get this running sooner than later. Thank you for your help and thank you for this forum.