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The PCV valve is hiding on the lower part of the engine to the driver's side of the oil filter. You can see it easily from underneath the car. The valve itself is a metal valve that threads into a port on the block. It can also be accessed from above by moving aside the throttle cables. Unlike most cars the PCV valve does not pop into a grommet on the valve cover. At least this is true of the last 2001 Civic DX that I tuned up. F. Bryan

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17y ago

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