Is there a test for dealer to know that misfiring caused wrist pins to wear out?

Question

Thank you for your answers to my previous question. The one that made the most sense is that when the 1 and 8 cylinders were misfiring, it caused the wrist pins to wear out. I bought truck in Sept 06; 4,000 miles no problems. Sunday, Service Engine Soon light came on, took it to dealer on Tuesday. They replaced coils for cylinders, changed fuel filter, replaced all spark plugs. Drove it twenty miles, started loud clunking. Is there some way for them to have known that all was not right before I drove away?

Answer 1

I saw that answer. And I have never heard of misfiring to cause wrist pins to wear out. And I've been in the business a long time.
It's impossible for wrist pins to wear out because of a misfire.
Backfiring could cause a piston to be destroyed. But not just a misfire.
It would be best to take it back to the dealership for diagnosis.
I was a service manager for 8 years and a shop manager for many other years of the largest GM dealership in Dallas. And never have I encountered that.
Master tech 40 yrs.

Answer 2

wrist pins don't wear out from misfiring, they wear out from old age or lack of proper lubrication, except in the case of high performance or racing engines.

If there is a misfire, there is LESS wear on the wrist pins.

Answer 3

A good mechanic generally has a pretty good ear for what is going on in your engine and else where on your car. I think the sales people may know and would not say anything. I have found very few scruples in sales people. They would pretty much ignore what a mechanic would tell them.