The Predator 212cc horizonal engine for my Harbor Freight air compressor would not start after sitting for about 1 month. This was the first time after having this compressor for about 4 years and only 30 hours of run time on the meter and it would not start. Over the past week of random attempts to start the engine it would only start and run for about 310 seconds and would not restart at all it would just send a pop out the exhaust. So, I decided to diagnose the problem with greater detail and recorded these events for others that may experience this issue with their Predator engine.