if its running fine, not over heating or losing fluids why worry?
yeah, but its not running fine tho is it, its running a sack idling way to high, then the revs drop to roughly nothing when im wating at lights, i have to really give her some to keep her drop diein , same with most junctions.
If the engine has high mileage a would look into getting a new engine with low miles on. Could work out cheaper in the long run. I found after getting my head gasket done the car never ran the same.
Someone obviously didn't do the work correctly then