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Engine Controls - Specifications Isuzu Amigo I

Specifications 4 illustrations ~250 words

INTRODUCTION

Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This is a quick-reference article to use when you are familiar with an adjustment procedure and only need a specification.

SERVICE INTERVALS & SPECIFICATIONS

ComponentInterval (Miles)
Air Filter30,000
Automatic Transmission Fluid (1)30,000
Coolant30,000
Front & Rear Axle Oil15,000
Manual Transmission Fluid15,000
Oil & Filter7500
Oxygen Sensor
Amigo, Pickup, Rodeo & Trooper 2.6L90,000
Spark Plugs30,000
Timing Belt60,000
Transfer Case Oil15,000
(1) Fluid requires replacement only under severe operation. Severe operation is driving on rough dusty roads or repeated short trips.
(1)Fluid requires replacement only under severe operation. Severe operation is driving on rough dusty roads or repeated short trips.

REPLACEMENT INTERVALS

ApplicationInterval (Miles)
Valve Clearance
Amigo, Pickup & Rodeo15,000
Trooper 2.6L (1)15,000
(1) On Trooper 2.8L models, adjustment is only required when engine is repaired. No adjustment interval is given from manufacturer.
(1)On Trooper 2.8L models, adjustment is only required when engine is repaired. No adjustment interval is given from manufacturer.

ADJUSTMENT INTERVALS

Application(1) Belt Deflection
Amigo, Pickup & Rodeo
All Belts(3/8)" (10 mm)
Trooper
2.6L
A/C Belt(3/8)" (10 mm)
Power Steering BeltN/A
W/P BeltN/A
2.8L(2)
(1) Deflection is checked with 22 lbs. (10 kg) pressure applied midway on longest belt run. (2) Serpentine belt tension is automatically adjusted.
(1)Deflection is checked with 22 lbs. (10 kg) pressure applied midway on longest belt run.
(2)Serpentine belt tension is automatically adjusted.

DRIVE BELT ADJUSTMENT

CAPACITIES

ApplicationGroup
Amigo25
Pickup & Rodeo
A/T24
M/T25
Trooper24/25/27

BATTERY SPECIFICATIONS

ApplicationQts. (L)
Crankcase (Includes Filter)
Amigo, Pickup & Rodeo
2.3L4.2 (4.0)
2.6L5.2 (4.9)
3.1L4.5 (4.3)
Trooper
2.6L5.2 (4.9)
2.8L4.5 (4.3)
Cooling System (Includes Heater)
Amigo, Pickup & Rodeo
2.3L & 2.6L9.5 (9.0)
3.1L11.4 (10.8)
Trooper
2.6L8.5 (8.0)
2.8L10.6 (10.0)
Manual Transmission
Amigo & Pickup (1)
2.3L1.6 (1.5)
2.6L3.1 (2.9)
Rodeo
2.6L3.1 (2.9)
3.1L
2WD2.2 (2.1)
4WD3.1 (2.9)
Trooper (1)3.1 (2.9)
Automatic Transmission (Dexron-II)
Pickup
Dry Refill6.9 (6.5)
Rodeo9.3 (8.8)
Trooper
2.6L (Dry Refill)12.0 (11.4)
2.8L (Dry Refill)9.3 (8.8)
Differential (2)
Amigo & Pickup
Front Axle1.6 (1.5)
Rear Axle
2.3L
Banjo Type1.6 (1.5)
Salisbury Type1.9 (1.8)
2.6L & 3.1L1.9 (1.8)
Rodeo & Trooper
Front Axle1.6 (1.5)
Rear Axle1.9 (1.8)
Transfer Case
Amigo, Pickup & Rodeo (1)1.5 (1.4)
Trooper
A/T
2.6L (3)1.2 (1.1)
2.8L (4)1.5 (1.4)
M/T (1)1.5 (1.4)
(1) Use 5W-30 SF engine oil with ambient temperatures less than 90°F (32°C) or SAE 40W with temperatures greater than 90°F (32°C). (2) On standard differentials, use SAE 80W-90/API GL-5 gear oil. On limited slip models, use SAE 80W-90/API GL-5 gear oil rated for limited slip axles. (3) Use Dexron-II transmission fluid. (4) Use 5W-30 SF engine oil.
(1)Use 5W-30 SF engine oil with ambient temperatures less than 90°F (32°C) or SAE 40W with temperatures greater than 90°F (32°C).
(2)On standard differentials, use SAE 80W-90/API GL-5 gear oil. On limited slip models, use SAE 80W-90/API GL-5 gear oil rated for limited slip axles.
(3)Use Dexron-II transmission fluid.
(4)Use 5W-30 SF engine oil.

FLUID CAPACITIES

IDLE SPEED

ApplicationIdle RPM
Amigo & Pickup
2.3L (1) (2)900
2.6L (1) (3) (4)900
3.1L
A/T650
M/T750
Rodeo
2.6L900
3.1L800
Trooper
2.6L (1) (3)900
2.8L (1) (5)800
(1) Transmission in Park or Neutral. (2) Disconnect and plug vacuum advance, canister purge and EGR vacuum lines. (3) Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines. (4) On California models, disconnect and plug vacuum line for EGR vacuum switching valve. (5) Disconnect distributor set timing connector. Connector is a Black/White wire with White connector, located below tray at rear of center console. If specification varies from underhood Vehicle Emission Label, use specification from label.
(1)Transmission in Park or Neutral.
(2)Disconnect and plug vacuum advance, canister purge and EGR vacuum lines.
(3)Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines.
(4)On California models, disconnect and plug vacuum line for EGR vacuum switching valve.
(5)Disconnect distributor set timing connector. Connector is a Black/White wire with White connector, located below tray at rear of center console. If specification varies from underhood Vehicle Emission Label, use specification from label.

IDLE SPEED SPECIFICATIONS

THROTTLE POSITION SENSOR (TPS)

Note. Refer to appropriate ADJUSTMENTS article in the ENGINE PERFORMANCE Section for throttle position sensor/switch adjustment procedures.

ENGINE COMPRESSION

ApplicationSpecification
Amigo, Pickup & Rodeo
2.3L & 2.6L8.3:1
3.1L8.5:1
Trooper
2.6L8.3:1
2.8L8.9:1

COMPRESSION RATIO

ApplicationSpecification
Amigo, Pickup & Rodeo
2.3L & 2.6L(1) 142-171 psi (9.9-12.0 kg/cm 2 )
3.1L(2)
Trooper
2.6L(1) 155-157 psi (10-12 kg/cm 2 )
2.8L(3) 100 psi (7.0 kg/cm 2 )
(1) Minimum pressure is 114 psi (8.0 kg/cm 2 ). (2) Information is not available from mfg. (3) Minimum pressure listed. Pressure should not be less than 70 percent of highest cyl.
(1)Minimum pressure is 114 psi (8.0 kg/cm 2 ).
(2)Information is not available from mfg.
(3)Minimum pressure listed. Pressure should not be less than 70 percent of highest cyl.

COMPRESSION PRESSURE

VALVE CLEARANCE

Note. Pickup 3.1L, Rodeo 3.1L and Trooper 2.8L are equipped with hydraulic lash adjusters. No adjustments are required.

Application(1) In. (mm)
Amigo, Pickup & Rodeo
2.3L
Intake.006 (.15)
Exhaust.010 (.25)
2.6L
Intake & Exhaust.008 (.20)
Trooper 2.6L
Intake & Exhaust.008 (.20)
(1) Adjust valve clearance with engine cold.
(1)Adjust valve clearance with engine cold.

VALVE CLEARANCE SPECIFICATIONS

Note. Right and left sides refer to engine as viewed from flywheel.

All models

Right Side - All intake.

Left Side - All exhaust.

Trooper 2.8L

Right Side - E-I-E-I-I-E (Front-to-rear).

Left Side - E-I-I-E-I-E (Front-to-rear).

DISTRIBUTOR

ApplicationIn. (mm)
Amigo, Pickup & Rodeo
2.3L & 2.6L.012-.020 (.30-.50)
3.1L.008-.016 (.20-.40)
Trooper(1)
(1) Information is not available from manufacturer.
(1)Information is not available from manufacturer.

DISTRIBUTOR PICK-UP COIL AIR GAP

ApplicationOhms
Amigo, Pickup & Rodeo
2.3L & 2.6L(1)
3.1L500-1500
Trooper(1)
(1) Information is not available from manufacturer.
(1)Information is not available from manufacturer.

DISTRIBUTOR PICK-UP COIL RESISTANCE

IGNITION COIL

Application (1)PrimarySecondary
Amigo, Pickup & Rodeo
2.3L1.2-1.48600-13,000
2.6L.81-.997500-11,300
3.1L.60-1.06500-10,200
Trooper0.99400
(1) On all models, insulation resistance should not be more than 10m (million) ohms.
(1)On all models, insulation resistance should not be more than 10m (million) ohms.

IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)

HIGH TENSION WIRE RESISTANCE

ApplicationResistance
Amigo, Pickup & Rodeo
2.3L & 2.6L
Coil Wire(1)
Spark Plug Wires9600-22,400
3.1L
Coil Wire1500-3900
Spark Plug Wire
No. 12900-7500
No. 23500-8500
No. 32200-7200
No. 42400-7400
No. 52400-7400
No. 62100-7100
Trooper
Coil Wire3300-7000
Spark Plug Wires9600-22,600
(1) Information is not available from mfg.
(1)Information is not available from mfg.

HIGH TENSION WIRE RESISTANCE

SPARK PLUGS

ApplicationNGK/AC
AmigoBPR6ES-11/R42XLS
Pickup & Rodeo
2.3L & 2.6LBPR5ES-11/R43XLS
3.1LR43TSK
Trooper
2.6LBPR5ES-11/R43XLS
2.8LR43TSK

SPARK PLUG TYPE

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
Amigo, Pickup & Rodeo
2.3L & 2.6L.040 (1.02)14 (19)
3.1L.045 (1.14)14 (19)
Trooper
2.6L.040 (1.02)14 (19)
2.8L.045 (1.14)14 (19)

SPARK PLUG SPECIFICATIONS

FIRING ORDER & TIMING MARKS

ApplicationBase Timing
Amigo, Pickup & Rodeo
2.3L6 @ 900
2.6L12 @ 900
3.1L10 @ 800
Trooper
2.6L12 @ 900
2.8L10 @ 800

IGNITION TIMING - (Degrees BTDC@RPM)

Firing Order & Dist. Rotation (Trooper 4-Cylinder). Scheme 1

Scheme 1: Firing Order & Dist. Rotation (Trooper 4-Cylinder)
Scheme 1: Firing Order & Dist. Rotation (Trooper 4-Cylinder)

Firing Order & Dist. Rotation (Amigo, P/U & Rodeo 4-Cyl). Scheme 2

Scheme 2: Firing Order & Dist. Rotation (Amigo, P/U & Rodeo 4-Cyl)
Scheme 2: Firing Order & Dist. Rotation (Amigo, P/U & Rodeo 4-Cyl)

Firing Order & Dist. Rotation (Trooper 2.8L V6). Scheme 3

Scheme 3: Firing Order & Dist. Rotation (Trooper 2.8L V6)
Scheme 3: Firing Order & Dist. Rotation (Trooper 2.8L V6)

Firing Order & Dist. Rotation (Pickup & Rodeo V6). Scheme 4

Scheme 4: Firing Order & Dist. Rotation (Pickup & Rodeo V6)
Scheme 4: Firing Order & Dist. Rotation (Pickup & Rodeo V6)

FUEL PUMP (CARBURETED)

ApplicationPressure psi (kg/cm 2 )
Amigo & Pickup 2.3L3.56 (.25)

FUEL PUMP PERFORMANCE

FUEL PUMP (FUEL INJECTED)

ApplicationUnregulated Pressure psi (kg/cm 2 )Regulated Pressure psi (kg/cm 2 )
Amigo & Pickup
2.6L(1) (2) 42 (2.9)(3) 35 (2.4)
3.1LN/A9-13 (.62-.91)
Rodeo
2.6L(1) (2) 43 (3.0)(3) 36 (2.5)
3.1LN/A9-13 (.62-.91)
Trooper
2.6L(1) (2) 42 (3.0)(3) 35 (2.5)
2.8LN/A9-13 (.62-.91)
(1) With Vacuum Switching Valve (VSV) connector unplugged and pressure regulator vacuum hose disconnected. (2) With pressure regulator vacuum hose connected, 12 volts applied to Blue wire terminal and Black wire terminal grounded of VSV. (3) With pressure regulator vacuum hose connected and Vacuum Switching Valve (VSV) disconnected.
(1)With Vacuum Switching Valve (VSV) connector unplugged and pressure regulator vacuum hose disconnected.
(2)With pressure regulator vacuum hose connected, 12 volts applied to Blue wire terminal and Black wire terminal grounded of VSV.
(3)With pressure regulator vacuum hose connected and Vacuum Switching Valve (VSV) disconnected.

FUEL PUMP PERFORMANCE

INJECTOR RESISTANCE

ApplicationOhms
Amigo & Pickup
2.6L13.8
3.1LGreater Than 1.2
Rodeo
2.6L2-3
3.1LGreater Than 1.2
Trooper
2.6L2-3
2.8LGreater Than 1.2

INJECTOR RESISTANCE