will not start

[rigdog43]

Ok ya'll
its me again . My cousin has a 03, 6.0. he said it has been slow to start the past 2 days , He changed the battires , because it turned over slow and one showed to be bad . truck started great . the next time it was slow to start
he changed both fuel filters. truck started great . now it will not start at all !
(cam censor , or crank censor ) or do ya'll have other ideas . can the censors be tested or is it just a hit and miss thing
thanks again

 

[fordtrucker4life!]

Was the check engine light coming on before having problems? You should scan that sucker to check what codes have popped up.

 

[F350DRW1]

gotta check codes. Could be HPOP. 03's were known for it.