[porschedavid]

Hi porsche 928 s2. Took porsche out for drive yesterday. Got it up to operating temperature. I was driving along and it just cut out on me. I tried to start it again but all it was doing is the engine was turning over but not firing. I left it for 3 hours I went back to it and it started first time. Started it today from cold it run for 5 minutes and cut out on me and it did the same as the day before, the engine was just turning over and not firing. I left it for 3 hours again and it started first time. Any ideas?