Positive Crankcase Ventilation: Service and Repair

Vacuum nipple crankcase ventilation, replacing

Removal

Removing the intake manifold
Remove the intake manifold. See: Intake manifold/ gasket, replacing Service and Repair.

Removing the vacuum nipple




Wet the outside of the insulation using soap solution. Fold in both ends of the insulation.

Removing the vacuum nipple, continued




Place paper under the vacuum nipple to absorb any coolant leakage. Install hose clips on the engine coolant hoses.
Remove the hose clamps on the engine coolant hoses. Disconnect the engine coolant hoses from the nipple.




Remove the hose clamp from the plastic hose nipple on the oil trap. Pull the plastic hose out from the insulation.

Note! If the white plastic nipple comes off and remains in the rubber hose it must be removed. See the following step.




If the nipple breaks, it must be removed. It must not be pressed into the hose.

Hint: Secure the hose above the clamp. Use pliers.

Carefully screw a self-tapping screw into the nipple. The inner diameter of the nipple is 2.7 mm. Remove the clamp. Pull out the broken nipple.

Installation

Installing the vacuum nipple




Wet the plastic hose on the new nipple. Use a soap solution. Press the hose through the insulation following the previous routing. Install the hose and nipple on the oil trap. Use a new clamp.




Install the engine coolant hoses on the vacuum nipple. Use new clamps. Remove the hose clips.




Fold the insulation back into place. If the insulation breaks, apply tape over the crack.

Installing the intake manifold
Install the intake manifold. See: Intake manifold / gasket, replacing Service and Repair.