How to change the PCV Valve in a 4.6L or 5.4L V-8
The Positive Crankcase Ventilation device vents petrol fumes from the crankcase with the entry of the engine whereby they are disposed of through burning in the cylinder. Gas fumes in the crankcase room a herbal product of blow-by, which wake up to some degree in also a brand new engine since a perfect seal between a piston ring and cylinder is impossible to achieve. Engines provided to vent this gas fumes right into the atmosphere through a little filter placed on the valve cover(s). However, contemporary emission standards call for these fumes it is in disposed that in a much more environmentally friendly manner, and also thus the PCV device is used.
Applicable model Years: 1997 - 2010 Ford F-150, 4.6L and also 5.4L V-8 1997 - 2001 PCV valve: Motorcraft EV233 (Ford F7UZ-6A666-CA) 2002 - 2004 PCV valve: Motorcraft EV258 (Ford 2L3E-6A666-AA) 2005 PCV valve: Motorcraft EV259 (Ford 4L2E-6A666-BA) 2006 - 2010 PCV valve: Motorcraft EV279 (Ford 6W72-6A666-AA) note - there might be some crossover year w/ to the to component numbers; always verify fitment.
The PCV valve is basically a check valve the ensures the flow of crankcase fumes just occurs indigenous the crankcase to the input manifold, and not the entry manifold to the crankcase. Over time, the PCV valve often tends to become coked v oil and also related contaminates, hindering its operation. Symptoms of a faulty PCV valve include bad idle quality (rough idle), engine hesitation, loss of accelerator response, excessive fuel in the engine oil, and decreased fuel economy. The location and also orientation that the PCV valve might vary by model year and also engine. The adhering to procedures are based upon the 2002 to 2004 design years, yet lay the foundation for PCV valve instead of on any kind of 1997 come 2010 Triton V-8.
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• situate the PCV valve. This 2 valve 4.6L V-8 has the PCV placed into the passenger next valve cover. Part 3 valve 5.4L engines will have actually the PCV situated on the driver side valve cover. The ar is not universal for all 4.6L/5.4L engines. If you"re having difficulty locating it, recommendation the replacement component and trace all hoses leading into the entry manifold/plenum.
• remove the hose at the outlet that the PCV valve. This may have a water tap clamp, or it may simply it is in a slip-fit style. Part models may have a boil PCV valve that calls for an electrical connector it is in removed.
• top top this layout (reference image), the PCV is removed by turning it respond to clockwise 90 levels with a wrench. Some PCV valves will be organized in place by 2 little bolts (3 valve 5.4L V-8s, because that example). Eliminate the bolts and also pull the PCV valve out. Part engines may also have a PCV valve that merely slips into place.
• Reinstall the PCV valve hose and, if applicable, the hose clamp and wiring harness connector.
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