It's a diesel so there shouldn't be a coil to worry about. Fuel and air would be what I look at. I once had a friend who put his gloves in front of the air filter and they would get sucked into the opening and close off the air. It would release after the engine died. Took us quite a while to find that one.
Check your filters and as said all fuel lines.
Check your filters and as said all fuel lines.