I have a Westerbeke generator EFI that will not run anymore. It quit working while running. It sputtered and stalled out as if it ran out of fuel. We did all of the recommended self checks as advised by the manual. The fuel injector works. The oil sensor is good. Fuel lines were bled. Also the spark plugs are dry. Not sure if anyone else on here has had this happen. We would appreciate advise on what else we should check.