Yes your guage could not be working right however they normally work or they don't. But overheat is not the only thing that causes head gasket failures. Some times just age or the weather in your area some gaskets just fail. There is a lot of pressure between head and engine a weak spot will surely eventually blow the gasket.
Warpage is definately a possibility some are some aren't. But most technicians will choose to have head machined because they have to guarantee the job and milling the head is just another way of trying to be sure it does not happen again.
Head bolts replaced. This is a required because you have a aluminum head the bolts are stretch to yield bolts. These bolts actually stretch as they are torqued put a new beside a old one and you will see how far they have to stretch. The only way to get the required torque is these special bolts. Hope this helps
Monday, February 7th, 2011 AT 10:08 PM