Compression Ignition Addict
Join Date: Jul 2010
Location: Falls Chruch
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2 675 CCA should be fine. Is it cranking slow? A weak battery will eventually slow down and die, just like starting a gas engine. If the thing cranks and cranks and cranks, but never catches, id look elsewhere. Weak batteries can effect PCM programming though.
Have you tried holding the accelerator pedal all the way down when starting? Does that work?
I'd bet its worn injectors. Pretty normal and nothing to worry about for a while.
Nonconformist. Functionality over bling.
My three rules for 7.3l troubleshooting: 1) Replace CPS and keep a spare. 2) Replace FPR and know your fuel pressure. 3) Hook it to a scanner and check for codes.