I have a friend who owns a 2000 F250 Heavy Duty  diesel pickup. Very
recently he has been having problems with the engine dying for no
reason whatsoever. He can go days without it dying, and then at the
most inopportune moments, it's dead. He replaced the fuel filter a year
ago, so doesn't think that's the problem. He still has battery power,
lights, etc...but no engine. I told him I thought it was sucking air in
the fuel line and confirmed this with my father who teaches Diesel
mechanics at Chatahoochee tech. However, dad is 2500 miles away and
can't help. Can anyone tell me if they have had this problem, and where
we can find some diagrams of the engine...he is a single dad of 4 and
recently unemployed so a "REAL" mechanic is out of the question. Thanks!