I had a similar problem today...was leaving an airport when i went to start it I heard a click sound and no starter movement...we took off the cowling and a guy at the local shop tapped on the starter and it would be good for one try, then if you did not start it, it had to be tapped on again and it would again work for one try...So, because I was 1.5 hours from home (6 hours by car) I had him give it another "magic tap" put the cowl back on...fired it up and got the heck out of there and flew home.. I landed, shut the plane off and then tried to see what would happen....same thing...just a click noise from the solenoid under the instr. panel....I would have thought it was a bad solenoid, but then why does the tapping on the starter do the trick??? OH....One thing to add to my frustration....It is a brand new Skytec, I bought and had installed last week ! A bit frustrated to say the least....now if it is the starter, I get to pay my mechanics to do it all over again...