To bleed air from the cooling system of a 1997 Honda Civic EX, start by ensuring the engine is cool. Open the radiator cap and fill the radiator with coolant until it reaches the top. Then, run the engine with the heater on high, allowing it to reach operating temperature; this helps circulate coolant and expel air. Keep an eye on the coolant level, adding more as needed until the air is purged and the coolant remains at the correct level without bubbles.
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