Hard Start!

[TWIM]

My friend has a 03 6.0 that has been at the mechanic for awhile because they can not figure out why it has a hard start in the morning. They have replaced several things including batteries, alt, CPS...
The mechanic says there are no codes, any ideas what to check!
Thanx!

[larry4406]

on my 2003 f350 6.0 i went through a crank sensor (cured it for about 8 months), then a cam sensor (cured it for about a month), and now they replaced the entire engine harness due to a history of internal shorts in the harness which kills the brain (no codes stored) and also kills the power to the injectors. Apparently the wire damage is internal to the harness and thus can't be seen (i.e, no smoking gun). So, i remain a skeptic and keep the dealer and tow truck company on speed dial.

[dvtech]

[img]/ubbthreads/images/graemlins/smile.gif[/img]there may be one of two things wrong. one is a short in the drivers side harness running along the top side of the head going to the ficm module where the loom y's off going down to the pcm. at the y section right by cyl. 4 inj. pigtail you want to wiggle in that area while some one cranks the eng. & see if it will start. the other is you may have a high pressure leak in your oil system, blown oring somewhere in that system. those are two of the most common problems for this eng. [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]