Resonator and Tailpipe AssemblyMaintenance
Aftermarket devices or modifications tothe exhaust system may reduce theeffectiveness of the exhaust system aswell as cause damage to the exhaustsystem or engine. This may also degradevehicle performance and could lead toengine damage that may not be coveredby the vehicle Warranty.
Emission Control System Laws
WARNING
Do not remove or alter the originalequipment floor covering orinsulation between it and the metalfloor of the vehicle. The floor covering andinsulation protect occupants of the vehiclefrom the engine and exhaust system heatand noise. On vehicles with no originalequipment floor covering insulation, do notcarry passengers in a manner that permitsprolonged skin contact with the metalfloor. Failure to follow these instructionsmay result in fire or personal injury.
In the United States, federal law andcertain state laws prohibit removing orrendering the emission control systeminoperative. Similar federal or provinciallaws may apply in Canada. We do notrecommend any vehicle modificationwithout determining applicable law.
Tampering with emissionscontrol system, including relatedsensors or the diesel exhaustfluid injection system can result in reducedengine power and the service engine soonwarning lamp illuminating in theinformation display.
Tampering with a Noise ControlSystem
Federal law prohibits the following acts orthe causing thereof:
•The removal or rendering inoperativeby any person other than for purposesof maintenance, repair or replacementof any device or element of designincorporated into any new vehicle forthe purpose of noise control prior to itssale or delivery to the ultimatepurchaser or while it is in use.
•The use of the vehicle after such deviceor element of design has been removedor rendered inoperative by any person.
Among those acts, which the United StatesEnvironmental Protection Agency maypresume to constitute tampering are theacts listed below:
•Removal of hood blanket, fender apronabsorbers, fender apron barriers,underbody noise shields or acousticallyabsorptive material.
•Tampering or rendering inoperative theengine speed governor, to allow enginespeed to exceed manufacturer’sspecifications.
The complexity of the diesel engine makesit so the owner is discouraged fromattempting to perform maintenance otherthan the services described in this Owner'sManual.
If you experience difficulty starting theengine, rough idling, excessive exhaustsmoke, a decrease in engine performanceor excess fuel consumption, perform thefollowing checks:
•A plugged or disconnected air inletsystem or engine air filter element.
•Water in the fuel filter and waterseparator.
•A clogged fuel filter.
•Contaminated fuel.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Fuel and Refueling
