PCV System: Maintenance

After long periods of engine operation, ventilation valve tends to become clogged, which will affect proper engine operation. Every 30,000 miles for Federal vehicles or 60,000 miles for California vehicles, clean and inspect system and replace PCV valve.

Fig 1: Crankcase Ventilation System (Pickup & 4-Runner - Carburetor Models)

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Fig 2: Crankcase Ventilation System (Land Cruiser)

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Fig 3: Crankcase Ventilation System (Cressida & Supra)

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Fig 4: Crankcase Ventilation System (Celica, Pickup & 4-Runner - Fuel Injection Models)

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Fig 5: Crankcase Ventilation System (Tercel & Corolla)

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Fig 6: Crankcase Ventilation System (Camry)

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Fig 7: Crankcase Ventilation System (Van)

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Fig 8: Crankcase Ventilation System (MR2)

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