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It certainly looks like the chain got heavily stressed, given the attitude of the pins.

The CP4 is a really stupid setup that should have had some type of containment or major upgrading to prevent the mess it makes when it goes.  I’m at 110k on mine and trying to decide what to do with it. 

Good luck and hope it turns out well.

There are quite a few options out there now for the CP-4. They have some that they fixed, meaning they pined the roller to keep it from spinning and they block the fuel passage that allows the debris to get to your injectors. The problem is it’s mainly for the big trucks, have not seen any for these smaller engines. I have to assume the pump is different but who knows maybe it’s the same pump.