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My step-son is getting a 2003 F-350 PS (168,000 miles) from his dad next week. My step-son told me that his dad needed to do a few things to the truck before he would get the truck. One of the items was to have the valves set. Is this a normal maintenance item for this truck?
I would recommend that you pull the valve covers and retorqe the rocker arm pedastals and fuel injector hold down bolts.
I went through mine as a matter of routine and was surprised to see nearly half of them were not tight on an engine that only had 75,000 miles on it.
Rocker pedastal bolts are 20 ft lb
injector retainer bolts are 120 inch lb.
After doing that you will be surprised at how much tighter the engine sounds.
Mine lost a lot of general rattling sounds while underway on the freeway.