Timing actuator on an 09 ISX

Bad injector on the rear bank or check valve in IFSM. Injector pushes fuel back in timing actuator with huge pressure and split it.

 

I’m having the same problem but it’s not my injectors I pulled the first three out and put in the back and pull the back three out put in the front still blowing the bolts on the same timing actuator replaced fuel regulators and rebuild the dampeners on the back of the IFSM this did not start until I put a new head on iT could it be a bad head it will break them between 250and 1000 miles

 

Is new head was new or reman? If it's reman the accumulated stress can lead to tiny cracks around injector from combustion chamber to timing bore. During the hard pull the head got hot and gases blow in. If you have injector leak tool Cummins ISX / Signature Engine Fuel Injector Leak Test Kit 3164001 Alternative | eBay or you can make it use the broken actuator base part then check is air is bubbling out. How it to do Watch all 3 parts. So you can narrow to cylinder where leak is. Could be more then one bad cylinder.
Try to run this test on hot engine because the temperature will open crack wider.

 

Ok I’ll try it when it’s hot it didn’t have any bubbles when we did this the last time thanks for the help
Is there any thang else that could cause it in the ifsm

 

My truck has been sitting for about 5 months the guys who are rebuilding it took their time to do a terrible job my problem is I got a new head and cam put on now the engine smokes like crazy and it's Non-Stop at idle and also even heavier smoke with a load what could this problem possibly be I put a new EGR valve on in December but that's it somebody please help me with this