I just use the regular Pacer lift pumps not any kind of pressure pump. Just remember you have a hot engine and fuel being pumped. I don't run full speed just fast enough to get a good full stream from 1 inch line and cutoff  nozzle. I will slow engine down before the nozzle cuts off and kill engine as soon as it does. I don't know for sure what happened but neighbor had what could have been a lot worse of fire than was a few years ago where they were using a engine pump. I think it was mostly operator error but using plastic totes for fuel sure didn't help any. Luckily no one was injured and the fuel, fuel trailer and a pickup was the loss. It could have easily been much worse.