Approx two months ago I “retrieved” my old 2000 Subaru Legacy Outback (~230K miles) from its parking spot of 8 months here in the Mtns of NC. Much work needed to be done to get it driveable again. First job was head gasket, serpentine belt and timing chain. Next job was temp regulation system (thermostats, etc), O2 sensor, Fuel filter. Next was radiator and hoses. Then Power Steering pump and hoses. There were probably a couple other items in there of less consequence…it has been a long and expensive two months. Last week the tensioner bolt broke…the engine is shot. I have had the same mechanic do all of this work. He did not replace the tensioner bolt when he took it out to replace the head gasket.
- What is protocol or best practice for mechanics (either in mechanics courses 101 or 102, or even more advanced) in terms of replacing or suggesting replacement of the Tensioner Bolt (TB) when replacing the head gasket on a car fitting this description?
- What is the likelihood that the TB would break on its own even if reinstalled correctly?
- What is the lifespan of a TB?
- What is the likelihood of someone (my former mechanic) not replacing the TB correctly…and what would that look like?
- What are the signs I should look for to see if it wasn’t potentially replaced correctly?
- How would I tell/prove if the mechanic might be at fault?
- If at fault, how much responsibility should be placed at his feet (in his wallet) for the new engine?