Quote:
Originally Posted by EdzBenz
We decided to remove the head and inspect what is going on in there.
-Two precombustion chambers are damaged
-Two valves are bent
-Top of the pistons are fine and still smooth
-Cylinder walls are fine and you can still see the machining marks from the factory.
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It seems to me that someone (your mechanic?) must have moved either a camshaft or the timing chain or both in order to cause this damage. Why was that necessary? Installing and setting the timing of an injection pump does not require any work on the camshafts or timing chain.
If pistons and valves made contact, then the piston heights must be measured to determine if a rod has bent or the bearings damaged. It would be grossly negligent to only repair the damage to the head and not check the rod and bearings. If there is any damage to the rod and bearings, then I would also replace that piston out of an abundance of caution.
These "mistakes" would cause me to find another shop, have a good used engine installed, and have the original shop pay the bill.