The suggestions about a failing lift pump is better directed towards a 98.5 to 02 VP44 injected trucks. New diagnostic procedures recommend checking fuel flow volume rather than pressure. Typically if you have lift pump failure on a HPCR truck it will have extremely low power or just quit running all together. It is not as common to wipe out a CP3 as it is a VP44 due to fuel starvation but is possible. I agree it should be checked for proper fuel flow, but not likely the problem since he says it runs normal after he gets it started.