How to know if a C15 engine is good or bad

I called the cat dealer where the work was done to verify full rebuild and all that was done. Just gave them the vin off the truck.
Maybe you can go this route too

 

Very dishonest seller then. All records are kept. Tell the guy you called and the work was not performed as said and be done with it.

 

Try calling your local Cat dealer. If it was done under warranty Cat should have a record of it. Could also explain why the seller has no paperwork if it was a warranty job.

 

Any Cat certified dealer can look up and see if there is any warranty purchased when it got an opt. If it just got rebuilt at a non certified shop, no real way to find out.
Whats the engine s/n or last six of the truck? I can look it up for ya

 

Engine S/n is NXS24899
Last ECM image was in 2011. Engine had 12783hrs and 321742 miles. 475hp @1650lbft

No recent image, so probably no warranty or rebuild by a certified dealer

 

Yes