Among those acts, which the U.S.
Environmental Protection Agency may
presume to constitute tampering are the
acts listed below:
•
Removal of hood blanket, fender apron
absorbers, fender apron barriers,
underbody noise shields or acoustically
absorptive material.
•
Tampering or rendering inoperative the
engine speed governor, to allow engine
speed to exceed manufacturer’s
specifications.
The complexity of the diesel engine makes
it so the owner is discouraged from
attempting to perform maintenance other
than the services described in this Owner's
Manual.
If you experience difficulty starting the
engine, rough idling, excessive exhaust
smoke, a decrease in engine performance
or excess fuel consumption, perform the
following checks:
•
A plugged or disconnected air inlet
system or engine air filter element.
•
Water in the fuel filter and water
separator.
•
A clogged fuel filter.
•
Contaminated fuel.
•
Air in the fuel system, due to loose
connections.
•
An open or pinched sensor hose.
•
Check engine oil level.
•
Wrong fuel or oil viscosity for the
climatic conditions.
If these checks do not help you correct the
engine performance problem you are
experiencing, consult an authorized dealer.
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance
On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lbs. (4,536
kg) GVWR (Gross Vehicle Weight Rating).
The preceding statements concerning
prohibited tampering acts and
maintenance, and the noise warranty
found in the Warranty Guide, are
applicable to complete chassis cabs over
10,000 lbs. (4,536 kg) GVWR.
FUEL TANK SELECTOR
SWITCH
(If Equipped)
E205996
Your vehicle has two fuel tanks. The fuel
in each fuel tank is independently used.
Use the switch on the instrument panel to
select the left-hand or right-hand fuel tank.
The fuel gauge indicates the remaining fuel
in the selected fuel tank. See
112
F650750 (TBC), enUSA, First Printing
Fuel and Refueling
