MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

Operating Instructions
Cold Weather Starting—Air Intake Heater
Do not use ether or any other starting fluid as a cold starting
aid in your Model 330. Engine conditions are automatically
monitored and in cold weather the fuel/air mixture is preheated
in the manifold.
WARNING! Do not use ether or other starting fluids
as a cold-starting aid in your Model 330. Your
engine uses either an electrical grid or an open
flame inside the manifold, to heat the air/fuel
mixture for cold weather starting. If ether or
another starting fluid is used, the air/fuel will
ignite inside the manifold, which could cause an
explosion and severe injury.
With each engine make, the air intake heating system works
differently. To understand fully how your engine’s heating system
operates, see the engine Operation and Maintenance
Manual for details.
On most systems the engine block temperature is monitored
at startup; other systems monitor the engine oil pressure,
coolant temperature, and time, as well. When the pre-set
conditions are met, the heater automatically engages.
Air Intake Heater
Operating the Engine
The air intake heater system will alert you when the engine
requires preheat. On the dash is a “WAIT TO START” warning
light (See page 19). This light alerts you to wait before
starting the engine.
Turn the key to IGN & ACC: the WAIT TO START light will
light up for bulb check.
Wait until the WAIT TO START light goes off before you start
the engine.
When the WAIT TO START light goes off, the preheat cycle is
complete and you can start the engine normally.
After the engine starts and until operating conditions reach a
certain point, the system will continue to operate to eliminate
white-smoke exhaust.
Engine Warm–Up and Idling
The purpose of engine warm-up is to allow an oil film to be
established between pistons, shafts, and bearings while your
engine gradually reaches operating temperature.
Model 330 PB1318 3/01 – 59 –