Jeep Cherokee 2000 Service Manual - page 1043
EXHAUST MANIFOLD
DESCRIPTION
The two exhaust manifolds are log style and are
made of high silicon molybdenum cast iron. The
exhaust manifolds share a common gasket with the
intake manifold. The exhaust manifolds also incorpo-
rate ball flange outlets for improved sealing and
strain free connections.
DIAGNOSIS AND TESTING
ENGINE DIAGNOSIS—INTRODUCTION
Engine diagnosis is helpful in determining the
causes of malfunctions not detected and remedied by
routine maintenance.
These malfunctions may be classified as either per-
formance (e.g., engine idles rough and stalls) or
mechanical (e.g., a strange noise).
Refer to the Service Diagnosis—Performance chart
and the Service Diagnosis—Mechanical chart for pos-
sible causes and corrections of malfunctions. Refer to
Group 14, Fuel System for the fuel system diagnosis.
Additional tests and diagnostic procedures may be
necessary for specific engine malfunctions that can
not be isolated with the Service Diagnosis charts.
Information concerning additional tests and diagno-
sis is provided within the following diagnosis:
•
Cylinder Compression Pressure Test.
•
Cylinder Combustion Pressure Leakage Test.
•
Engine Cylinder Head Gasket Failure Diagnosis.
•
Intake Manifold Leakage Diagnosis.
Fig. 13 Exhaust Manifolds 4.0L Engine
Fig. 11 Oil Pan
1 – OIL PAN
2 – OIL PAN DRAIN PLUG
Fig. 12 Intake Manifold 4.0L Engine
9 - 68
4.0L ENGINE
XJ
DESCRIPTION AND OPERATION (Continued)