ENGINE - 8.3L
DESCRIPTION
The engine is an 8.3 Liter (505 CID), 10-cylinder,
90° V-type, lightweight, single-cam, overhead valve
engine (Fig. 1). This engine is designed for premium
unleaded fuel.
The crankshaft is forged steel. The cylinder block
and cylinder heads are aluminum. The firing order is
1–10–9–4–3–6–5–8–7–2. The cylinders are numbered
from front to rear as follows:
• on the left bank—1, 3, 5, 7, 9
• on the right bank—2, 4, 6, 8, 10
Vehicle Identification Number
This number is located on the rear of the cylinder
block just below the right cylinder head (Fig. 2).
Engine Serial Number
This number is located on the lower right front of
the cylinder block near the oil pressure sensor (Fig.
2).
DIAGNOSIS AND TESTING
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
mechanical (e.g., a strange noise), or performance
(e.g., engine idles rough and stalls).
(Refer to 9 - ENGINE - DIAGNOSIS AND TEST-
ING) - MECHANICAL and (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING) - PERFORMANCE for
possible causes and corrections of malfunctions. Refer
to the appropriate Diagnostic Information for fuel
system diagnosis.
Additional tests and diagnostic procedures may be
necessary for specific engine malfunctions that can-
not be isolated with the Engine Diagnosis charts.
Information concerning additional tests and diagno-
sis is provided within the following:
• Cylinder Compression Pressure Test
• Cylinder Combustion Pressure Leakage Test
• Cylinder Head Gasket Failure Diagnosis
• Intake Manifold Leakage Diagnosis
• Hydraulic Tappet Noise Diagnosis
• Engine Oil Leak Inspection
Fig. 1 8.3L V-10 Engine
Fig. 2 Engine Identification
1 - VIN LOCATION
2 - ENGINE SERIAL NUMBER
ZB ENGINE 9 - 3
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