The GA engines in the aircraft I've flown (all Cirrus) do "just work". I have had trouble starting one once, but it was already hot and I had to fiddle with the

The GA engines in the aircraft I've flown (all Cirrus) do "just work". I have had trouble starting one once, but it was already hot and I had to fiddle with the mixture and throttle during and immediately after turnover. I have yet to encounter engine issues in-flight (but I don't have a ton of flying hours, either).