I recently bought a 94 Escort Wagon with the 1.9liter engine. It runs fine except for a rough idle when in gear but not in park or neutural. I didn't expect a major problem and suspected a vacuum leak. It has 117800 miles on it which I didn't thnk was excessive for the year. I put new plugs, plug wires, pcv valve, air filter, breather filter and had a new timing belt, water pump, and serpentine belt installed. It still had the rought idle and decided to take it to independent shop. They told me that is has a major engine problem and Cylinders 1 and 2 have excessive blow-by. I did notice some oil in the air filter and breather box. Cylinders 3 and 4 are normal. The car doesn't run bad, especially for one that has two cylinders in trouble. I'd appreciate some thoughts from this Escort community. I'm hoping that engine overhaul is not needed and something else could be causing this condition.