How long were you flying? 5 minutes? An hour? 2 hours?
Sorry about your pilots.
We can’t help you on the engine issue without more information?
Cold and Dark Start?
Ctrl E start
From the runway?
How much fuel is “Plenty of Fuel”?
Which tanks were you running from?
John Denver’s plane had plenty of fuel, but his engine cut out, too.
I’m not trying to say you’re wrong, it could very well be there’s a problem. You just didn’t give us enough information to have any discussion about it.