6.4 Start Stall after sitting overnight.

[Coach]

My turn, second or third shop to play with it.  No one has  figure it out. Has had recent head gaskets and high pressure pump gasket/harness reseal of inj. Truck will start and run normal all day once I bleed air off high pressure side. Let set overnight starts up and stalls then crank no start like no fuel to high pressure pump. Purge air at cooler through banjo fitting. starts and runs normal.  Suspect low side is draining back just not sure what is causing it.  Looked through serviced manual it  shows 2  check valves 1 in return line at fitting from head returns and 1 in lift pump.I inspection all of  banjo fitting All banjo fittings look to have green pain on them. Book does not show any with check valves, I know 6.0 did have some.  Is there a good test to  check to which drain back is no holding.

[batmantech]

reference this past post sounds similar. -go back 3 pages on old posts-  look for

 

6.4 starts runs stalls

By batmantech, April 14, 2015