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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.

1

PCV hose

(See PCV Hose Installation Note.)

2

Oil separator

3

Retainer

(See Retainer Removal Note.)

(See Retainer Installation Note.)

4

PCV valve

Retainer Removal Note

CAUTION:

  • Be sure to follow the removal procedures below to prevent the leakage of blow-by gas caused by the damage to the tab of the oil separator or the oil separator itself.

1. Insert a flat blade screwdriver with its tip wrapped in a shop rag into the gap between the retainer and the oil separator as shown in the figure.

2. Spread the side surface of the retainer outward to dismount it with attention to the tab.

Retainer Installation Note

CAUTION:

  • Be sure to replace the old retainer with a new one to prevent the escape of blow-by gas. Reinstalling the old retainer will reduce airtightness.

1. Make sure that the retainer alignment mark is directed as shown in the left diagram before installing the retainer to the oil separator.

PCV Hose Installation Note

  • Install the end of the PCV hose on the marking side to the PCV valve.

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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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