Priming If The Engine Has Run Out Of Fuel - Jeep Grand Cherokee 2018 Manual

5. Wipe clean the underside of the filter housing
to prevent contamination from entering fuel
system during service.
6. Remove using a socket. Rotate counter-
clockwise for removal.
7. Remove the used filter cartridge from the
housing and dispose of according to your
local regulations.
8. Wipe clean the sealing surfaces of the lid and
housing.
CAUTION!
Take care when handling the new fuel filter to
prevent contamination from entering the fuel
system.
9. Lubricate o-ring on new filter with clean en-
gine oil.
10. Install the cartridge into the housing with
clockwise rotation, use a socket to tighten.
11. Repeat steps 5 through 10 to service sec-
ond fuel filter in assembly.
12. After engine start, verify the filters do not
leak.
40
Priming If The Engine Has Run Out
Of Fuel
WARNING!
Do not open the high pressure fuel system
with the engine running. Engine operation
causes high fuel pressure. High pressure fuel
spray can cause serious injury or death.
1. Add a substantial amount of fuel to the tank,
approximately 2 to 5 gal (8L to 19L).
2. Press ignition switch twice without your foot
on brake to put vehicle in Run position. This
will activate the in tank fuel pump for approxi-
mately 30 seconds. Repeat this process
twice.
3. Start the engine using the "Normal Starting"
procedure. Refer to "Starting The Engine" in
"Starting and Operating" for further informa-
tion.
CAUTION!
The starter motor will engage for approxi-
mately 30 seconds at a time. Allow two
minutes between cranking intervals.
NOTE:
The engine may run rough until the air is forced
from all the fuel lines.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and be hazardous or ex-
plosive when mixed with diesel fuel.
CAUTION!
Due to lack of lubricants in alcohol or gaso-
line, the use of these fuels can cause dam-
age to the fuel system.
NOTE:
• Use of biodiesel mixture in excess of 20%
can negatively impact the fuel filter's ability to
separate water from the fuel, resulting in high
pressure fuel system corrosion or damage.
• In addition, commercially available fuel addi-
tives are not necessary for the proper opera-
tion of your diesel engine.
• For extreme cold conditions, "Mopar Pre-
mium Diesel Fuel Treatment" is recom-
mended to assist with cold starting.