How to change the PCV Valve in a 4.6L or 5.4L V-8

The Positive Crankcase Ventilation mechanism vents gasoline fumes from the crankcase v the input of the engine whereby they are disposed of through combustion in the cylinder. Gas fumes in the crankcase space a natural product the blow-by, which occurs to some level in even a brand new engine because a perfect seal between a piston ring and also cylinder is difficult to achieve. Engines offered to vent these gas fumes right into the atmosphere through a small filter an installed on the valve cover(s). However, modern-day emission standards call for these fumes it is in disposed of in a an ext environmentally friendly manner, and thus the PCV device is used.


Applicable design Years: 1997 - 2010 Ford F-150, 4.6L and 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) keep in mind - there might be part crossover year w/ for to component numbers; always verify fitment.


The PCV valve is essentially a examine valve the ensures the flow of crankcase fumes just occurs from the crankcase to the intake manifold, and not the input manifold to the crankcase. End time, the PCV valve tends to come to be coked through oil and also related contaminates, hindering that operation. Symptom of a faulty PCV valve include bad idle quality (rough idle), engine hesitation, ns of throttle response, extreme fuel in the engine oil, and decreased fuel economy. The location and orientation that the PCV valve might vary by model year and engine. The adhering to procedures are based on the 2002 to 2004 design years, however lay the foundation for PCV valve instead of on any 1997 to 2010 Triton V-8.

You are watching: 2003 ford expedition pcv valve location

Click any kind of thumbnail to view high resolution fullsize image w/ enhancement details (where applicable)


*

• situate the PCV valve. This 2 valve 4.6L V-8 has the PCV placed into the passenger side valve cover. Some 3 valve 5.4L engines will have the PCV situated on the driver side valve cover. The ar is not universal for every 4.6L/5.4L engines. If you"re having challenge locating it, referral the replacement part and map all hoses leading right into the input manifold/plenum.


*

• remove the hose at the outlet the the PCV valve. This may have actually a hose clamp, or it might simply be a slip-fit style. Part models may have a cook PCV valve that needs an electric connector be removed.


*

• on this layout (reference image), the PCV is removed by turning it counter clockwise 90 levels with a wrench. Some PCV valves will be hosted in place by 2 small bolts (3 valve 5.4L V-8s, because that example). Remove the bolts and also pull the PCV valve out. Some engines may additionally have a PCV valve that just slips right into place.


*

*

• Reinstall the PCV valve water tap and, if applicable, the water tap clamp and wiring harness connector.

See more: Which Is Bigger Kilobyte Or Megabyte, What Is Larger Kb Or Mb


jajalger2018.org is no affiliated with nor endorsed through Ford Motor agency or any type of manufacturer stated herein, uneven explicitly detailed otherwise.