Isuzu Trooper II 1986 User Manual

1.9L 4-CYL - VIN [A], 2.0L TURBO [F], 2.3L 4-CYL [L]
1986 Isuzu Trooper II
1986 ISUZU ENGINES
1.9L, 2.0L Turbo & 2.3L 4-Cylinder
Impulse, P’UP, Trooper II
* PLEASE READ THIS FIRST *
NOTE: For engine repair procedures not covered in this article,
see ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION article
in the GENERAL INFORMATION section.
ENGINE CODING
ENGINE IDENTIFICATION
Engine may be identified by the eighth character of the
Vehicle Identification Number (VIN). The VIN is stamped on a metal
tab, located on top of instrument panel at lower left of windshield.
Engine serial number is stamped on a machined pad on engine block.
ENGINE IDENTIFICATION CODES TABLE
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Application VIN Code
1.9L 4-Cylinder
P’UP & Impulse .............................. A
2.0L 4-Cylinder Turbo
Impulse ..................................... F
2.3L 4-Cylinder
P’UP & Trooper II ........................... L
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ENGINE, MANIFOLDS & CYLINDER HEAD
ENGINE
Removal (P’UP & Trooper II)
1) Disconnect battery cables. Scribe hinge positions on
hood. Remove hood. Remove lower engine cover. Drain crankcase oil and
cooling system.
2) Disconnect PCV hose from air cleaner. Disconnect hose
from air injection pump. Remove air cleaner duct. Remove air cleaner
bolts and wing nut. Lift air cleaner to disconnect TCA hose at air
cleaner. Remove air cleaner.
3) Remove intake manifold cover. Disconnect alternator
wiring. Disconnect exhaust pipe from exhaust manifold. Loosen clutch
control cable adjustment nut.
4) Disconnect heater hose to temperature control valve (if
equipped). Disconnect oxygen sensor wiring (if equipped). Disconnect
hose at air switching valve and vacuum switching valve (if equipped).
Disconnect heater hoses at heater core tubes.
5) Disconnect control cable from heater temperature control
valve. Remove control valve (if equipped). Remove left engine mount
nut. Install Engine Hanger (J-26555). Use exhaust manifold studs to
mount hanger.
6) Disconnect engine ground cable. Disconnect fuel hoses at
carburetor. Remove coil high tension wire. Disconnect vacuum hose
from rear of intake manifold. Disconnect canister vacuum hoses (if

Isuzu Trooper II 1986 Specifications

Crankshaft Main & Connecting Rod Bearings

main bearings journal diameter	2.2032-2.2038 in (55.920-55.935 mm)
main bearings clearance	0.0008-0.0025 in (0.021-0.064 mm)
crankshaft end play	0.0024-0.0099 in (0.06-0.25 mm)
connecting rod bearings journal diameter	1.9276-1.9282 in (48.925-48.940 mm)
connecting rod bearings clearance	0.0007-0.0029 in (0.019-0.075 mm)
connecting rod bearings side play	0.008-0.013 in (0.02-0.33 mm)

Valve Spring Specifications

free length	1.8951 in (48.1 mm)
valve closed pressure	56 lbs @ 1.61 in (25.4 kg @ 41 mm)

Camshaft Specifications

journal diameter	1.339 in (34.0 mm)
clearance	0.003-0.0043 in (0.065-0.110 mm)
lobe lift	1.451 in (36.85 mm)

Valve Timing Specifications

intake open	21 BTDC
intake close	65 ABDC
exhaust open	55 BBDC
exhaust close	20 ATDC

Summary

Engine Removal and Installation

Engine Removal (P'UP & Trooper II)

Step-by-step procedure for removing the engine.

Engine Removal (Impulse)

Step-by-step procedure for removing the engine.

Cylinder Head Service

Cylinder Head Removal (1.9L Models)

Steps to remove the cylinder head for 1.9L models.

Cylinder Head Removal (2.0L & 2.3L Models)

Steps to remove the cylinder head for 2.0L and 2.3L models.

Cylinder Head Installation (All Models)

Steps for installing the cylinder head on all models.

Timing Chain and Sprocket Service (1.9L Models)

Timing Chain & Sprockets Removal (1.9L)

Steps to remove the timing chain and sprockets.

Timing Chain & Sprockets Inspection (1.9L)

Timing Chain & Sprockets Installation (1.9L)

Steps to install the timing chain and sprockets.

Timing Belt and Sprocket Service (2.0L/2.3L Models)

Timing Belt & Sprockets Removal (2.0L/2.3L)

Steps to remove the timing belt and sprockets.

Timing Belt & Sprockets Inspection (2.0L/2.3L)

Timing Belt & Sprockets Installation (2.0L/2.3L)

Steps to install the timing belt and sprockets.

Camshaft Service

Camshaft Removal

Procedure to remove the camshaft.

Camshaft Inspection

Inspecting camshaft lobes, journals, and runout.

Camshaft Installation

Procedure for installing the camshaft.

Camshaft Bearings and End Play

Camshaft Bearings

Valve and Rocker Arm Assembly Service

Rocker Arm Shaft Assembly Removal

Procedure to remove the rocker arm shaft assembly.

Rocker Arm Shaft Assembly Inspection

Rocker Arm Shaft Assembly Installation

Procedure for installing the rocker arm shaft assembly.

Valve Spring Service and Clearance Adjustment

Valve Springs Removal

Steps to remove valve springs.

Valve Springs Inspection

Valve Springs Installation

Valve Clearance Adjustment

Procedure for adjusting valve clearance.

Piston and Rod Assembly Service

Piston & Rod Assembly Removal

Steps to remove piston and rod assemblies.

Piston & Rod Assembly Installation

Steps for installing piston and rod assemblies.

Fitting Pistons

Engine Block and Piston Inspection

Engine Block Inspection

Piston Inspection

Piston Ring Fitting

Fitting Rings

Crankshaft and Rod Bearing Service

Crankshaft Main Bearings

Checking and installing crankshaft main bearings.

Connecting Rod Bearings

Checking and installing connecting rod bearings.

Thrust Bearing Alignment

Engine Oiling System Overview

Engine Oiling System Description

Oil Pump Service

Oil Pump Removal

Oil Pump Inspection

Oil Pump Installation

Engine Cooling System: Water Pump

Water Pump Removal

Water Pump Installation

Torque Specifications

Torque Specifications Table

Lists torque values for various engine components.

Pistons, Pins & Rings Specifications

Pistons, Pins & Rings Specifications Table

Crankshaft and Rod Bearings Specifications

Crankshaft Main & Connecting Rod Bearings Specifications Table

Valve Spring Specifications

Valve Spring Specifications Table

Camshaft Specifications

Camshaft Specifications Table