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Changing the Engine Air Filter - 6.7L Diesel
Air Filter Restriction Gauge
WARNING:
To reduce the risk of vehicle damage and personal burn injuries, do not start your engine with the air cleaner removed and do not remove it while the engine is running. |
Note:
Operating your vehicle in heavy snowfall or extreme rain conditions may allow excessive amounts of snow or water into the air intake system. This could plug or soak the air filter and cause the engine to lose power or shut down.
The restriction gauge, on the upper housing of the air filter assembly, measures the vacuum inside the air filter. The more the air filter is dirty or clogged, the higher the vacuum reading.
Check the air filter restriction gauge whenever you open the hood to perform general engine maintenance or at least every
7,500 mi (12,000 km). If you operate your vehicle in extremely dusty conditions, check and reset the gauge at least every
500 mi (800 km), or two weeks, whichever comes first. Change the air filter when the restriction gauge reads near the change filter line and the gauge is yellow. If you allow the restriction gauge to reach maximum restriction, you can affect your engine performance and fuel economy.
Note:
Do not blow out the air filter element with compressed air since the compressed air could damage the filter paper.
Note:
Do not rely on filter appearance alone. A filter which appears to be dirty may have several thousand miles (kilometers) of life remaining.
After installation of the new filter element, reset the gauge by pressing the reset button on top of the gauge.
We recommend the following actions after operating the vehicle up to
in heavy snowfall or extreme rain:- Snow: At the earliest opportunity, open the hood and clear all the snow and ice from the air filter housing inlet. Do NOT remove the foam filter and reset the air filter restriction gauge.
- Extreme rain: The air filter dries after about 15–30 minutes at highway speeds. At the earliest opportunity, open the hood and reset the air filter restriction gauge.
Air Filter Replacement
When replacing the air filter element, use a Motorcraft® air filter element. See
Motorcraft Parts
.
Note:
Failure to use the correct air filter element may result in severe engine damage.
- Locate the mass airflow sensor electrical connector on the air inlet tube.Disconnect the electrical connector.Unlock the locking clip on the connector, then squeeze and pull the connector off the air inlet tube.
- Remove the clips that secure the air filter housing cover.Push the air filter cover forward and away from you when pulling up slightly to release it.
- Remove the air filter element from the air filter housing.
- Remove and install a new foam filter, if needed. See Scheduled Maintenance. If you do not replace the foam filter, be sure the existing foam filter is in place.
- Install a new air filter element.Be sure that the groove seal on the pleated paper filter traps both sides of the vertical partition of the air box.
- Engage the clips to secure the air filter housing cover to the air filter housing.Be careful not to crimp the filter element edges between the air filter housing and cover.Ensure that you align the tabs on the edge properly into the slots.
- Reconnect the mass airflow sensor electrical connector to the inlet tube. Make sure the locking tab on the connector is in the locked position.
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