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Home >> Mercury >> 1983 >> LN7 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> PCV System >> Service Procedures >> PCV Valve
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PCV Valve

If PCV valve is clogged or defective, replace valve. DO NOT attempt to clean valve. Replace PCV valve every 30,000 miles on front wheel drive vehicles or every 52,500 miles on rear wheel drive vehicles.