3.
Bring the engine up to operating speed gradually
as it warms up and develops stable oil pressure.
NOTE: When the engine is started, it takes a
short time to build up a lubricating oil film be-
tween the shafts and bearings, and between the
pistons and liners. The oil pressure gauge indi-
cates any drop in lubricating oil pressure within
15 seconds of engine start-up.
4.
If minimum engine oil pressure at idle of 10 psi
(69 kPa) does not register within 15 seconds,
shut down the engine.
CAUTION
Protect the turbocharger during the start-up by
not opening the throttle or accelerating the en-
gine above 1000 rpm until minimum engine idle
oil pressure registers on the gauge. Failure to do
so could damage the turbocharger.
5.
Idle the engine for three to five minutes at 1000
rpm before operating the engine under load.
DDE S60
NOTE: Before doing these steps, do the steps
in "Prestart".
1.
Turn the ignition switch to the on position
(
Fig. 7.6
). All the electronic gauges on the ICU
(instrumentation control unit) complete a full
sweep of their dials, the warning and indicator
lights light up, and the buzzer sounds for three
seconds.
2.
When all the indicators go out, turn the ignition
switch to the start position. Without touching the
throttle pedal, start the engine. If the engine
won’t start within 15 seconds, release the ignition
switch and allow the starter motor to cool.
IMPORTANT: If the engine won’t start, check the
main engine power fuses. The fuses are located
along the main engine electrical harness on the
left frame rail, near the batteries. If the fuses are
blown, replace the fuses. Be sure to find the
cause of the blown fuses as soon as possible.
NOTE: Some starters are equipped with op-
tional overcrank protection. If overcranking oc-
curs, a thermostat breaks the electrical circuit to
the starter motor until the motor has cooled.
WARNING
Never pour fuel or other flammable liquid into the
air inlet opening in the air intake in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury or property dam-
age.
3.
Check the oil pressure gauge immediately after
starting the engine.
4.
If no pressure registers within 10 to 15 seconds
or the ENGINE PROTECT indicator comes on,
shut down the engine and check the lubricating
oil system.
CAUTION
Protect the turbocharger during the start-up by
not opening the throttle or accelerating the en-
gine above 1000 rpm until minimum engine idle
oil pressure of 12 psi (83 kPa) registers on the
gauge.
5.
Idle the engine for about five minutes at 1000
rpm before operating the engine under load.
Mercedes-Benz
NOTE: Before doing these steps, do the steps
in "Prestart".
CAUTION
Never attempt to start any Mercedes-Benz elec-
tronic engine using ether or any other starting
fluid. Serious engine damage could result.
1.
Turn the ignition switch to the on position
(
Fig. 7.6
). All the electronic gauges on the ICU
(instrumentation control unit) complete a full
sweep of their dials, the warning and indicator
lights light up, and the buzzer sounds for three
seconds.
IMPORTANT: On vehicles equipped with an in-
take air preheater, the INTAKE HEATER indica-
tor stays on for a minimum of two seconds, re-
gardless of coolant temperature. Wait until the
INTAKE HEATER indicator goes out before at-
tempting to start the engine.
Engines and Clutches
7.8
