Ford 3S4Z-6N664-AA Crankcase Ventilation Tube

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Due to the high temperatures under the hood that can lead to deterioration, it is important to regularly check hoses in the engine, accessory and emission systems of your car. Look out for cracks, loose clamps, material hardening and leaks in hoses. Ensure that the hoses are secured using clamps and maintain tension so as to avoid any leaks. Inspect hoses without clamps at fitting points where they may expand or harden causing leaks. Check the PCV system hose for any damage such as cracks or leaks. If clogged check for obstruction and clean with solvent. Vacuum hoses should be replaced with those made from similar materials. Label them properly for reinstallation purposes if you take them off again. Plastic T-fittings should be checked for cracks and hose distortion using small pieces of vacuum hoses as stethoscope if necessary. Use a small piece of vacuum hose as a stethoscope to detect leaks. Examine flexible fuel lines that may be deteriorated, chafed or cracked before using a hose intended for your fuel injection system.

Check plastic T-fittings for cracks, and inspect the hose's fit over each fitting for any distortions that could lead to leakage.

Disconnect the quick-connect coupling from the PCV valve and turn the valve counterclockwise to remove it.