Car has SHO Yamaha engine. Cam sensor has been replaced previously as has the starter.
Starts properly most of the time, but sometimes it balks. When it does not start it seems as though the battery is going away, or the starter is bad and cranks but shuts down with an unusual sound (compared to other cars that won't start). I have found that if you wait a few minutes it will fire up and run properly,
then it may be perfectly fine for the next several start-ups.