This procedure covers the replacement of the PCV (Positive Crankcase Ventilation) valve on the 2015-2020 Ford F-150 with the 5.0L Coyote V8 engine, which helps regulate crankcase pressure and emissions.

Warnings

Tools required

Parts

• PCV valve × 1 — Motorcraft EV-277 or equivalent
• PCV valve grommet × 1 — Use OEM specification if damaged

Preparation

1. Ensure the engine is completely cool before beginning work
2. Park vehicle on level ground and engage parking brake
3. Open hood and secure with prop rod if necessary
4. Remove engine cover by pulling upward on the cover to disengage mounting grommets

Procedure

1. 1

   Locate the PCV valve
   Locate the PCV valve on the passenger side valve cover. It is mounted in a rubber grommet near the rear of the valve cover, with a hose connected to it running toward the intake manifold.
2. 2

   Disconnect the PCV hose
   Using needle nose pliers or hose clamp pliers, squeeze and slide the spring clamp back on the PCV hose approximately 1-2 inches away from the valve. Gently twist and pull the hose off the PCV valve nipple. If the hose is stuck, carefully use a small flathead screwdriver to break the seal, being careful not to damage the hose.
3. 3

   Remove the old PCV valve
   Grasp the PCV valve firmly and pull it straight up and out of the rubber grommet in the valve cover. You may need to twist slightly while pulling. The valve should release from the grommet with moderate force. If the grommet comes out with the valve, that is normal.
4. 4

   Inspect the grommet
   Inspect the rubber grommet for cracks, deterioration, or damage. If the grommet remained in the valve cover, check that it is still seated properly. If it came out with the old PCV valve, remove it from the old valve. Replace the grommet if it shows any signs of wear or damage.
5. 5

   Install new grommet if needed
   If installing a new grommet or reinstalling the old one, press it firmly into the valve cover opening. Ensure it is fully seated and flush with the valve cover surface. The grommet should fit snugly without gaps.
6. 6

   Install the new PCV valve
   Push the new PCV valve into the grommet with a firm twisting motion until it is fully seated. The valve should be secure and not pull out easily. Ensure the valve orientation allows the hose to connect without kinking. The valve should be hand tight in the grommet.
   Torque spec

   PCV Valve8 Nm (6 lb-ft)
7. 7

   Reconnect the PCV hose
   Push the PCV hose firmly onto the new PCV valve nipple until it is fully seated. You should feel it click or seat against the valve body. Slide the spring clamp back into position approximately 1/4 inch from the end of the hose to secure it properly.
8. 8

   Reinstall engine cover
   Align the engine cover mounting grommets with the corresponding posts on the engine. Press down firmly on the cover until all grommets are fully seated and the cover is secure.

Reassembly

1. Ensure the PCV hose is properly secured with the spring clamp in the correct position
2. Verify the engine cover is fully seated on all mounting points
3. Double-check that no tools or shop towels were left in the engine bay

Verification

• Start the engine and listen for any unusual vacuum leaks or hissing sounds near the PCV valve area
• With the engine at idle, you can carefully disconnect the PCV hose at the intake manifold end and place your thumb over the opening - you should feel strong vacuum suction indicating proper PCV function
• Check for smooth idle quality - a faulty PCV system can cause rough idle or stalling
• Inspect the PCV valve and hose connections for any signs of leaks or loose fittings after the engine reaches operating temperature

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