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Engine Controls - Service & Adjustment Specifications Acura MDX I

Specifications 5 illustrations ~230 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.

CAPACITIES

ApplicationQuantity
Automatic Transaxle (1)
MDX
Fluid Change2.9 Qts. (2.7L)
Overhaul7.7 Qts. (7.3L)
RSX
Fluid Change2.9 Qts. (2.7L)
Overhaul6.9 Qts. (6.5L)
3.2CL & 3.2TL
Fluid Change3.1 Qts. (2.9L)
Overhaul7.6 Qts. (7.2L)
3.5RL
Fluid Change3.2 Qts. (3.0L)
Overhaul9.1 Qts. (8.6L)
Cooling System (2)
MDX7.5 Qts. (7.1L)
RSX
A/T5.3 Qts. (5.0L)
M/T5.4 Qts. (5.1L)
3.2CL & 3.2TL5.9 Qts. (5.6L)
3.5RL6.4 Qts. (6.1L)
Crankcase (Includes Filter)
MDX4.5 Qts. (4.3L)
RSX
K20A25.0 Qts. (4.7L)
K20A34.4Qts. (4.2L)
3.2CL & 3.2TL4.6 Qts. (4.4L)
3.5RL4.9 Qts. (4.6L)
Differential
MDX2.8 Qts. (2.6L)
3.5RL1.2 Qts. (1.0L)
Manual Transaxle (3)
RSX1.6 Qts. (1.5L)
3.2L CL2.3 Qts. (2.2L)
(1) Manufacturer recommends Honda ATF-ZF1. (2) Drain and refill capacity, including heater. (3) Manufacturer recommends Honda MTF.
(1)Manufacturer recommends Honda ATF-ZF1.
(2)Drain and refill capacity, including heater.
(3)Manufacturer recommends Honda MTF.

FLUID CAPACITIES

Replacement Intervals

Component(1) Miles
Air Filter30,000
Automatic Transmission Fluid
3.2CL, 3.2TL & 3.5RL(2)
MDX(4)
RSX(3)
Brake Fluid3 Years
Camshaft Timing Belt(5) (6) 105,000
Coolant(2)
Differential
3.5RL(7)
MDX(8) 30,000
Engine Oil(9) 7500
Engine Oil Filter15,000
Fuel Filter(10)
Manual Transmission Oil120,000
Spark Plugs(11) 105,000
Valve Clearance
MDX, 3.2CL & 3.2TL(12) 105,000
RSX(12) 110,000
3.5RL(13)
(1) For severe service divide mileage intervals in half. (2) First service at 120,000 miles. Service every 90,000 miles thereafter. (3) First service at 75,000 miles. Service every 30,000 miles thereafter. (4) First service at 45,000 miles. Service every 30,000 miles thereafter. (5) Inspect water pump and replace as necessary. (6) If regularly driven in very hot or cold weather, over 110°F (43°C) or under -20°F (-29°C), replace belt every 60,000 miles. (7) First service at 60,000 miles. Service every 30,000 miles thereafter. (8) On MDX, first service at 15,000 miles. Service every 30,000 miles thereafter. (9) On RSX, every 10,000 miles. (10) Replaced when fuel pressure drops to less than specification. See REGULATED FUEL PRESSURE table under FUEL SYSTEM. (11) On RSX, replace every 110,000 miles. (12) Adjust valves only if noisy. (13) Equipped with hydraulic lifters. No adjustment required.
(1)For severe service divide mileage intervals in half.
(2)First service at 120,000 miles. Service every 90,000 miles thereafter.
(3)First service at 75,000 miles. Service every 30,000 miles thereafter.
(4)First service at 45,000 miles. Service every 30,000 miles thereafter.
(5)Inspect water pump and replace as necessary.
(6)If regularly driven in very hot or cold weather, over 110°F (43°C) or under -20°F (-29°C), replace belt every 60,000 miles.
(7)First service at 60,000 miles. Service every 30,000 miles thereafter.
(8)On MDX, first service at 15,000 miles. Service every 30,000 miles thereafter.
(9)On RSX, every 10,000 miles.
(10)Replaced when fuel pressure drops to less than specification. See REGULATED FUEL PRESSURE table under FUEL SYSTEM.
(11)On RSX, replace every 110,000 miles.
(12)Adjust valves only if noisy.
(13)Equipped with hydraulic lifters. No adjustment required.

REPLACEMENT INTERVALS

Drive Belt Adjustment

Application(1) Deflection - In. (mm)
A/C Compressor
Except 3.5RL(4)
3.5RL
New Belt(2) .22-.24 (5.5-6.0)
Used Belt(3) .31-.43 (8.0-11.0)
Generator
Except 3.5RL(4)
3.5RL
New Belt(2) .28-.31 (7.0-8.0)
Used Belt(3) .37-.45 (9.5-11.5)
Power Steering
3.2CL & 3.2TL
New Belt(2) .33-.45 (8.5-11.0)
Used Belt(3) .51-.65 (13.0-16.5)
MDX & RSX(4)
3.5RL
New Belt(2) .30-.35 (7.5-9.0)
Used Belt(3) .41-.49 (10.5-12.5)
(1) Deflection is with 22 lbs. (10 kg) pressure applied midway on longest belt run. (2) Install new belt to new specification. Run for 5 minutes and readjust to used belt specification. (3) Belt is considered used when it has been run for 5 minutes or more. (4) Automatic belt tensioner is used. Belt adjustment not required.
(1)Deflection is with 22 lbs. (10 kg) pressure applied midway on longest belt run.
(2)Install new belt to new specification. Run for 5 minutes and readjust to used belt specification.
(3)Belt is considered used when it has been run for 5 minutes or more.
(4)Automatic belt tensioner is used. Belt adjustment not required.

BELT ADJUSTMENT

ENGINE COMPRESSION

ApplicationSpecification (1)
MDX
Minimum(3) 145 psi (10.1 kg/cm 2 )
RSX (2) , 3.2CL & 3.2TL
Minimum(3) 135 psi (9.5 kg/cm 2 )
3.5RL
Minimum(3) 142 psi (10.0 kg/cm 2 )
(1) Maximum variation between cylinders is 28 psi (2 kg/cm 2 ). (2) Check compression at 250 RPM and WOT. (3) Check compression at 200 RPM and WOT.
(1)Maximum variation between cylinders is 28 psi (2 kg/cm 2 ).
(2)Check compression at 250 RPM and WOT.
(3)Check compression at 200 RPM and WOT.

ENGINE COMPRESSION SPECIFICATIONS

VALVE CLEARANCE

Application (1)In. (mm)
MDX, 3.2CL & 3.2TL
Intake0.008-0.009 (0.20-0.23)
Exhaust0.011-0.013 (0.28-0.33)
RSX (K20A2)
Intake0.008-0.010 (0.20-0.25)
Exhaust0.010-0.011 (0.25-0.28)
RSX (K20A3)
Intake0.008-0.010 (0.20-0.25)
Exhaust0.011-0.013 (0.28-0.33)
3.5RL(2)
(1) Adjust valves when engine is cold. (2) Equipped with hydraulic lifters. No adjustment is necessary.
(1)Adjust valves when engine is cold.
(2)Equipped with hydraulic lifters. No adjustment is necessary.

VALVE CLEARANCE ADJUSTMENT

IGNITION COIL

ApplicationPrimarySecondary
MDX & RSX(1)(1)
3.2CL & 3.2TL.34-.421,710-20,900
3.5RL0.9-1.1(2)
(1) Ignition coil specifications not available. (2) If primary resistance is as specified and trouble shooting does not reveal problem cause, replace coil with known good coil, and retest system.
(1)Ignition coil specifications not available.
(2)If primary resistance is as specified and trouble shooting does not reveal problem cause, replace coil with known good coil, and retest system.

IGNITION COIL RESISTANCE - Ohms @ 77°F (25°C)

SPARK PLUGS

ApplicationNGKNippondenso
MDXIZFR5K-11SKJ16DR-M11
RSX
K20A2IFR7G-11KSK22PR-M11
K20A3IFR6K11SKJ20DR-M11
3.2CL & 3.2TL
J32A1PZFR5F-11PKJ16CR-L11
J32A2PZFR6E-11PKJ20CR-M11
3.5RLPFR5L-11PK16PR-L11

SPARK PLUG TYPE

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
Spark Plugs (1).039-.043 (1.0-1.1)13 (18)
(1) DO NOT adjust gap on platinum spark plugs. If adjustment is required, replace with NEW platinum spark plug.
(1)DO NOT adjust gap on platinum spark plugs. If adjustment is required, replace with NEW platinum spark plug.

SPARK PLUG SPECIFICATIONS

FIRING ORDER & TIMING MARKS

Note. To identify firing order and locate timing marks, refer to illustrations. (Scheme 1)- (Scheme 5).

Scheme 1

Scheme 1: Firing Order (Except RSX)

Scheme 2

Scheme 2: Firing Order (RSX)

Scheme 3

Scheme 3: Ignition Timing Mark (MDX, 3.2CL & 3.2TL)

Scheme 4

Scheme 4: Ignition Timing Mark (RSX)

Scheme 5

Scheme 5: Ignition Timing Mark (3.5RL)

IGNITION TIMING

ApplicationSpecification
MDX8-12 @ 680-780
RSX
A/T6-10 @ 600-700
M/T6-10 @ 650-750
3.2CL
A/T8-12 @ 700-800
M/T8-12 @ 710-810
3.2TL8-12 @ 630-730
3.5RL13-17 @ 600-700
(1) Install Service Check Connector Tool (07PAZ-0010100) to service check connector before checking timing. (2) With automatic transmission in Neutral or Park, manual transmission in Neutral.
(1)Install Service Check Connector Tool (07PAZ-0010100) to service check connector before checking timing.
(2)With automatic transmission in Neutral or Park, manual transmission in Neutral.

IGNITION TIMING (DEGREES BTDC - RED MARK @ RPM) (1) (2)

FUEL PUMP

ApplicationAt Idle W/ Vacuum psi (kg/cm 2 )At Idle W/O Vacuum psi (kg/cm 2 )
MDX48-55 (3.4-3.9)57-64 (4.0-4.5)
RSX(2)47-54 (3.3-3.8)
3.2CL40-46 (2.7-3.3)47-54 (3.3-3.8)
3.2TL40-46 (2.7-3.3)48-55 (3.4-3.9)
3.5RL35-42 (2.5-3.0)43-51 (3.0-3.6)
(1) Pressure is measured at fuel filter, with vacuum hose connected or disconnected from fuel pressure regulator. (2) Information not available w/vacuum applied.
(1)Pressure is measured at fuel filter, with vacuum hose connected or disconnected from fuel pressure regulator.
(2)Information not available w/vacuum applied.

REGULATED FUEL PRESSURE (1)

IDLE SPEED & MIXTURE

Note. Before setting idle speed, ensure MIL is not on, no DTCs are stored, ignition timing is correct, spark plugs and air cleaner are okay, and PCV system is operating properly.

Note. On models equipped with Daytime Running Lights (DRL), apply parking brake, and with engine running, ensure headlights are off.

Application(1) Curb Idle RPM
MDX680-780
RSX
K20A2650-750
K20A3 (A/T & M/T)600-700
3.2CL
A/T700-800
M/T710-810
3.2TL630-730
3.5RL600-700
(1) With A/T in Neutral or Park, or M/T in neutral with no accessory loads.
(1)With A/T in Neutral or Park, or M/T in neutral with no accessory loads.

IDLE SPEED SPECIFICATIONS

ApplicationCO Level
All Models0.1%

IDLE CO LEVEL

FAST IDLE SPEED

Application(1) RPM
MDX, 3.2CL & 3.2TL(2)
RSX
K20A21600-2000
K20A3 A/T Or M/T1400-1800
3.5RL1100-1500
(1) With A/T in Neutral or Park, or M/T in neutral with no accessory loads. (2) Information is not available from manufacturer.
(1)With A/T in Neutral or Park, or M/T in neutral with no accessory loads.
(2)Information is not available from manufacturer.

FAST IDLE SPEED SPECIFICATIONS

THROTTLE POSITION SENSOR

Note. Throttle position sensor is not removable or adjustable. For testing procedures, see appropriate SELF-DIAGNOSTICS article or SYSTEM & COMPONENT TESTING article.