Chrysler Dodge Caravan 2002 Manual page 1260

RS
OIL PUMP (Continued)
Fig. 101 Front Crankshaft Seal - Installation
1 - PROTECTOR
2 - SEAL
3 - SPECIAL TOOL 6780
Fig. 102 Crankshaft Sprocket - Installation
1 - SPECIAL TOOL 6792
2 - TIGHTEN NUT TO INSTALL
INTAKE MANIFOLD
DESCRIPTION
The intake manifold is a two piece aluminum cast-
ing (Fig. 103) that attaches to the cylinder head with
fasteners. The manifold is a long branch design to
enhance low and mid-range torque
Fig. 103 Intake Manifold - Upper and Lower
1 - UPPER INTAKE MANIFOLD
2 - LOWER INTAKE MANIFOLD
OPERATION
The intake manifold delivers air to the combustion
chambers. This air allows the fuel delivered by the
fuel injectors to ignite when the spark plugs fire.
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKS
An intake manifold air leak is characterized by
lower than normal manifold vacuum. Also, one or
more cylinders may not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR THE FAN.
DO NOT WEAR LOOSE CLOTHING.
(1) Start the engine.
(2) Spray a small stream of water (Spray Bottle) at
the suspected leak area.
(3) If engine RPM'S change, the area of the sus-
pected leak has been found.
(4) Repair as required.
ENGINE 2.4L 9 - 59