Cummins diesel

Sure glad you have the rig out and getting read to use it! Another option for you is to swing it by Banks for a lookover too. The 8.3 with Banks system should get you up and running over any hill with relative ease. After sitting for three years, possible that something is not working correctly for you on the turbo. Another possibility, is that the 'brains' of the Banks systems can sometimes go out. This should default you back to normal engine behavior. From reading other posts on the 8.3 and the Banks systems, Banks no longer can obtain the 'brains' for the system. So if it has stopped working, you'll need to try and find a used or salvaged 'brain'. Very doable, as a gent on IRV2 just found a New Old Stock full Banks system for the 8.3, and had Banks install it. The 'brain box' for his unit did not work, and they found a replacement for him. Just completed this install within the last month.

And, as others have said, nothing wrong with having Cummins Cal Pacific shops look over the rig. At this age, and sitting dormant, check the hoses, belts, thermostants, etc. Probably would not hurt to have it dyno tested to see if all is up to snuff from the Cummins side of things.

One last tip for you, is look over the receipts from what and see when the last Air Cartridge was replaced. If over 4-5 years ago, safety item to replace again.

Best of luck, and have fun,
Smitty