My daughter's 97 Jetta 2.0 with 110k miles was over heated pretty good a little under a year ago. At that point it started ticking. It sounds like just one thing, either the intake or exhaust valve/lifter/rod on just one cylinder.
It has progressively worsened from a tick to a whack.
So, is this typical behavior if it were just a lifter? Do they get progressively worse? Or, is it more likely some other melted part: rod, valve, etc.
If only a lifter, I think I could manage that job, although advice is graciously accepted.
There are no other symptoms from the overheating -- it doesn't burn oil at an increased rate, there's no oil in the coolant or vice versa, there's no leak from the head gasket.
I've tried increasing the oil change frequency and using CD2.
Thanks a bunch.
Scott