Here's the deal, I have a 2005 Ford Excursion with the 6.0 powerstroke. I'm fully aware of the types of issues this motor has, so please, let's not derail this. This has been a great truck for our family - it has around 119K miles. In the mornings, it starts great but had issues with acceleration for the first 1/2 mile or so. After some research, this is common - the cause is faulty/clogged injectors.
We took it to a shop that specializes in diesel engines and their first diagnosis was the EGR. $600 later same problem, so they actually test drove it and found that the 5,6 & 8 injectors were causing the issue. Another thousand dollars to replace the 6 & 8 injectors. So we go to pick it up and it literally would not start.
Now they are saying there is a leak in the high pressure system, probably caused by a bad gasket in the HPOP or STC failure. So they want another thousand dollars.
But when we drove it in there, we had a minor issue with lag in the morning. Now we're in $1600 and it won't even start up and they want another $1k, just to get it running again.
IMO, something they did caused the no start issue because that was never a problem before we took it in, so I'm not about to pay them another thousand bucks to fix a problem they obviously created.
What's the right way to go about holding them accountable for turning a small problem into a huge one?