I need Ideas on what to check.

[Bamaprez]

Thanks for all the imputes this is just an update on what was found and what was the solution was. Again I value everyone's input and candor. After engine teardown. the #1 liner/piston had grenaded. inspecting the pieces I didn't fine and aluminum transfer on the liner bits as in the piston gaulding but the were not a lot of big pieces left this time. It got the block this time along with two valves and the injector. So they have agreed to purchase me a new long block although there's a two month backorder from Cummins. Now after pulling the rest apart myself I broke out an old eddy current machine from my time in the service and I found cracks in two of the 5 remaining liners in the engine. All just below the ring for the shims. Thanks again for the responses and thanks to Rawze for the website and dedications to trying to help us O/O stay profitable.

John