freightliner Custom Classic MT45 2022, Maintenance Manual

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Replacement
IMPORTANT: When replacing spark plugs and
wires, remove and replace one plug and wire at
a time. This will eliminate the possibility of incor-
rectly installing the wires and having a misfire
issue.
1. Hold both ends of the spark plug wire, and gently
pull one end of the wire off at a time.
NOTE: Do not discard the insulation shields.
The shields will be needed for the new wires.
2. Use a spark plug socket, a 3-inch extension, and
ratchet to remove the spark plug.
3. Install the new spark plug(s) and tighten just until
snug.
4. Take a new spark plug wire and put the insula-
tion shield at the plug-end of the wire.
5. Put a small amount of dielectric grease on each
end of the spark plug wire electrode, then install
the wire.
6. Repeat the above steps for the remaining spark
plugs and wires.
7. Install the engine access cover and lock the four
latches.
01–05 Evaporative Control
System Inspecting,
Gasoline Engines
Inspect the solenoid, evaporative control system can-
ister, and lines. See
Fig. 7 . Look for damaged lines,
leaking fuel, or any damage to the canister itself.
Make certain the electrical connections are properly
connected.
09/08/2010 f012188
1
3
2
1. Bottom Latch (two latches at the front)
2. Top Latch (one on each side)
3. Access Cover
Fig. 6, Engine Access Cover
09/07/2010 f200737
1
2
1. Evaporative Control System Canister
2. Solenoid
Fig. 7, Evaporative Control System
Engine
01
Walk-In Van Chassis Maintenance Manual, May 2022
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