It wont start

[hall_jerry]

Im not sure where to start with this or if this is the correct spot, im new to these forums. I have a 2008 Dodge ram 3500 6.7 turbo. the A/C compressor locked up and the belt broke while my wife was driving and only being 2 miles from home she drove it on in watching for overheating. it never got into the red. I replaced the A/C compressor, leaving the lines disconnected until i can get the lines cleared. The problem is, now it will not start. It turns over, now also the starter enguages for about 5 spins then it disenguages and re enguages over and over but doesnt start. Im at a loss. Any ideas from the pros?

 

[MyOhFive]

I have no idea on a cause, but try just disconnecting the battery for 5-10 mins then reconnecting and fire it up.

 

[hall_jerry]

I tried that, I have now figured out it will start with starter Fld and run great but wont start back without it

 

[Hemi5speed]

What do you mean the starter engages and disengages? Shouldn't the starter spin as long as the key is in the start position?

Being a diesel the starter is working extra hard. Is it possible the starter just can't turn the engine over without the starter fluid? Could be a weak starter or weak batteries from driving with no alternator?

I'm not a diesel guy just kinda thinking out loud. I'd try the engine section for this type of question, you'll get more views I'm sure

 

[MyOhFive]

Is it cranking at full strength? Could be weakened batts as mentioned.

Have correct fuel pressure?
Glow plugs working properly?