I have a 98.5 Dodge Ram 2500 4x4 5.9 cummins and I have this weird tick noise at idle and also when I shift my truck from drive to reverse to park. In this video you can hear this ticking towards the end. I checked all my torque converter bolts and they are tight. Also you can see on some of the bolts that it looks like have been rubbing on metal. I am wondering if my flex plate is cracked and making this noise. Truck drives fine and has no power loss. Also the engine was rebuilt last summer and also has 18k on rebuild. What are your thoughts.? 

Watch "Flex plate broken?" on YouTube
https://youtu.be/eo74OrnMqH4

Do you have the cummins barring tool? Rotate the assembly and look through the port as you rotate. Red loctite the bolts? One of mine came loose and it worked its way out, then I used red loctite and no issues. 

If your bolts are tight and it's still making that ticking sound then it very well could be a cracked flex plate, especially since it only does it when the engine is under a load. 

Also my torque converter bolts look they have been rubbing 

Put a little paint/marker pen on the shiny spots of the bolt heads, let dry, then run the engine through its steps. If the paint comes off you know you've got movement in there.   

46 minutes ago, IBMobile said:

Put a little paint/marker pen on the shiny spots of the bolt heads, let dry, then run the engine through its steps. If the paint comes off you know you've got movement in there.   

Look at the big brain on Brad!  Very clever.