97 Integra automatic In 2006, at 175k miles the engine overheated and warped the head and caused head gasket leak, or the other way around I'm not sure. A reputable mechanic that many of my friends use rebuild the top end for $1k (about half is labor and half is part). The job include milling the head flat, measuring all dimensions and replace all gaskets and seal in the head. The head gasket was leaking between cyl 3 and 4 as well as between the cylinder and the coolant area. Now, at 250k, the same symptom is happening. I see engine idle stumble when I start it after a long drive (i.e. 20 mins and 5 miles local traffic), the first start will have rough idle for a few seconds and then it would go away until you drive a long distance and shut down again. Unlike the last time, this time the plugs seem to have normal wear, instead of green tint on the leaking cylinders. I am thinking about doing another rebuild because the car is still in good condition other than the engine: new axles just in, transmission shift good, paint is still acceptable (no more clear coat but not worn down to primer yet). Some has suggested not to trust that head and I should get another used head to start with a rebuild, and some say aluminum fatigue and I should just get another lower mile used engine instead. Any suggestion? I don't drive much these days so at the moment I don't see myself buying a new car, or see fuel economy benefit of driving newer cars.