Cummins ISX15 2013 won't start and cranks over and turns off right away

[schISM]

(11-04-2017 )snailexpress Wrote:  You don't need to unbolt turbo. Just disconnect intake side from CAC.
Did you have open account on Cummins quick serve to educate yourself or you like to be milked dry by mobile service or any other morons who wants your money for nothing?
Here is picture where to disconnect and PDF from cummins what to check.

Sorry Snailxpress but that won't do any good to remove that cac boot. True you don't have to remove the turbo mounting bolts(but your gonna when you find out its the turbo) you can also remove the egr piping like Seyer76 suggested. If the engine is turning over but won't start on ether then either something has gone terribly wrong in the front geartrain and your cam isn't spinning allowing the valves to open and close(unlikely) or something is preventing the engine from moving the intake charge into the combustion chamber like an obstructed exhaust. The vgt can restrict exhaust flow to nothing and create just such an obstruction. It's been discussed on here before(use the search) your goal to diagnose just such a problem is to vent the exhaust manifold before the turbo. If it starts and runs once vented you've found the problem. Good luck.