INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This article may be used for quick reference when you are familiar with proper adjustment procedures and only need a specification.
CAPACITIES
| CAUTION | When battery is disconnected, radio will go into anti-theft protection mode. Obtain radio anti-theft protection code from owner prior to servicing vehicle. |
| Application | Quantity |
|---|
| Crankcase (Includes Filter) (1) |
| 1.8L Turbo | 3.7 Qts. (3.5L) |
| 2.8L | 6.3 Qts. (6.0L) |
| Cooling System (Includes Heater) |
| A4 |
| 1.8L Turbo | 7.4 Qts. (7.0L) |
| 2.8L | 6.4 Qts. (67.0L) |
| Automatic Transmission |
| Initial Fill |
| A4 (2) | 9.5 Qts. (9.0L) |
| Fluid Change |
| A4 (3) | (4) 2.7 Qts. (2.6L) |
| Final Drive (Differential) |
| Front Differential |
| Initial Fill |
| A4 (SAE 75W-90 Synthetic) | .84 Qt. (.8L) |
| Fluid Change |
| A4 (SAE 75W-90 Synthetic) | .79 Qt. (.75L) |
| Center Differential |
| Initial Fill (SAE 75W-90 Synthetic) |
| A4 Quattro | .84 Qt. (.8L) |
| Fluid Change (SAE 75W-90 Synthetic) |
| A4 Quattro | .79 Qt. (.75L) |
| Rear Differential |
| Initial Fill (SAE 90W) |
| A4 Quattro | 2.0 Qts. (1.9L) |
| Fluid Change (SAE 90W) |
| A4 Quattro | 1.9 Qts. (1.8L) |
| Manual Transmission (SAE 75W-90 Synthetic) |
| A4 | 2.9 Qts. (2.7L) |
| Power Steering (5) |
| A4 | 12-15 oz. (.7-.9L) |
| (1) To prevent overfilling, add approximately 1/2 qt. less than capacity. Start engine. Run until operating temperature is reached. Turn ignition off. Wait about 3 minutes. Check oil level. Fill to FULL mark on dipstick. Additional oil may be more or less than 1/2 quart. (2) Use fluid ESSO EGL 71141. Color is Yellow. DO NOT use additives. (3) Use fluid part No. G-052-162-A2. Color is Yellow/Gold. DO NOT use additives. (4) Fluid change capacity is up to 3.7 qts. if pan is removed. (5) DO NOT use Dexron ATF. |
| (1) | To prevent overfilling, add approximately 1/2 qt. less than capacity. Start engine. Run until operating temperature is reached. Turn ignition off. Wait about 3 minutes. Check oil level. Fill to FULL mark on dipstick. Additional oil may be more or less than 1/2 quart. |
| (2) | Use fluid ESSO EGL 71141. Color is Yellow. DO NOT use additives. |
| (3) | Use fluid part No. G-052-162-A2. Color is Yellow/Gold. DO NOT use additives. |
| (4) | Fluid change capacity is up to 3.7 qts. if pan is removed. |
| (5) | DO NOT use Dexron ATF. |
SERVICE INTERVALS & SPECIFICATIONS
| Component (1) | Interval (Miles) |
|---|
| Accessory Drive Belt |
| 1.8L Turbo | 80,000 |
| 2.8L | 75,000 |
| Air Filter | 30,000 |
| Automatic Transmission Fluid |
| Normal Service | (2) |
| Severe Service | (3) |
| Brake Fluid | Every 2 Years |
| Cam Timing Belt | 90,000 |
| Cam Timing Belt Tensioner Roller |
| 1.8L Turbo | (4) |
| 2.8L | 90,000 |
| Coolant | (5) |
| Fuel Filter | (6) |
| Oil & Filter |
| 1.8L Turbo | 5000 |
| 2.8L | 7500 |
| Spark Plugs | 30,000 |
| (1) See FLUID CAPACITIES table for fluid type. (2) Check fluid every 15,000 miles. (3) Replace fluid every 30,000 miles. (4) Not applicable. (5) Coolant system is permanently filled. If necessary to add coolant, use manufacturer's coolant additive G-12-A8D-TL-774-D. (6) Information is not available. |
| (2) | Check fluid every 15,000 miles. |
| (3) | Replace fluid every 30,000 miles. |
| (5) | Coolant system is permanently filled. If necessary to add coolant, use manufacturer's coolant additive G-12-A8D-TL-774-D. |
| (6) | Information is not available. |
ACCESSORY DRIVE BELT INSPECTION
Removing and installing accessory drive belt is an in-depth procedure. Visually inspect accessory drive belt while installed on engine. Ensure belt has no splits, cracks or other damage. If necessary to remove and replace accessory drive belt, see REMOVAL, OVERHAUL & INSTALLATION article.
ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Pressure |
| 1.8L Turbo |
| Normal | 145-189 psi (10.0-13.0 bar) |
| Minimum | 102 psi (7.0 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
| 2.8L |
| Normal | 131-203 psi (9.0-14.0 bar) |
| Minimum | 109 psi (7.5 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All models are equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL(S)
| Application | Primary | Secondary |
|---|
| 1.8L Turbo | .4-.6 Ohms (1) | (2) |
| 2.8L | (3) | 18,000-25,000 Ohms (4) |
| 2.8L | (3) | 8000-14,000 Ohms (5) |
| (1) Measuring primary resistance is normally not necessary. Measure between coil terminals No. 1 and 15 (on 3-pin connector, 2 outside terminals). (2) A high tension isolation diode is installed in secondary circuit of ignition coil. Measuring secondary coil resistance is not possible with conventional instruments. (3) Measuring primary resistance is not possible. (4) Measured between ignition coil towers, including spark plug cables and spark plug connectors. (5) Measured across ignition coil towers with spark plug wires and spark plug connectors removed. |
| (1) | Measuring primary resistance is normally not necessary. Measure between coil terminals No. 1 and 15 (on 3-pin connector, 2 outside terminals). |
| (2) | A high tension isolation diode is installed in secondary circuit of ignition coil. Measuring secondary coil resistance is not possible with conventional instruments. |
| (3) | Measuring primary resistance is not possible. |
| (4) | Measured between ignition coil towers, including spark plug cables and spark plug connectors. |
| (5) | Measured across ignition coil towers with spark plug wires and spark plug connectors removed. |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Component | Specification |
|---|
| 1.8L |
| High Tension Wire | (1) |
| High Tension Wire Connector | 2000 Ohms |
| 2.8L |
| High Tension Wire & Wire Connector | (2) 4000-6000 Ohms |
| (1) Specification is not available. (2) Specification is with ignition wires removed from ignition coil. |
| (1) | Specification is not available. |
| (2) | Specification is with ignition wires removed from ignition coil. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Bosch | NGK |
|---|
| 1.8L Turbo | F6 LTCR | BKUR 7 ET |
| 2.8L | (1) | BKR 6 EKUB |
| (1) No application. |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| 1.8L Turbo | .028-.035 (.7-.9) | 22 (30) |
| 2.8L | .063 (1.6) | 22 (30) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER
Scheme 1
Scheme 1: 1.8L Turbo Firing Order
Scheme 2
Scheme 2: 2.8L V6 Firing Order
IGNITION TIMING
Note. Ignition timing is controlled by PCM and is not adjustable.
FUEL PRESSURE SPECIFICATIONS (1.8L TURBO)
| Function | Specification |
|---|
| System Pressure |
| With Engine Idling (1) | 50 psi (3.5 bar) |
| With Engine Idling (2) | 58 psi (4 bar) |
| Residual Pressure (3) | 36 psi (2.5 bar) |
| (1) With fuel pressure regulator vacuum hose connected. (2) With fuel pressure regulator vacuum hose disconnected. (3) After 10 minutes. |
| (1) | With fuel pressure regulator vacuum hose connected. |
| (2) | With fuel pressure regulator vacuum hose disconnected. |
FUEL PRESSURE SPECIFICATIONS (1.8L TURBO)
FUEL PRESSURE SPECIFICATIONS (2.8L)
| Function | Specification |
|---|
| System Pressure |
| With Engine Idling (1) | 55-61 psi (4.0-4.2 bar) |
| With Engine Idling (2) | 48-54 psi (3.3-3.7 bar) |
| Residual Pressure |
| Cold Engine (3) | 32 psi (2.2 bar) |
| Warm Engine (3) | 44 psi (3.0 bar) |
| (1) With fuel pressure regulator vacuum hose disconnected. (2) With fuel pressure regulator vacuum hose connected. (3) After 10 minutes. |
| (1) | With fuel pressure regulator vacuum hose disconnected. |
| (2) | With fuel pressure regulator vacuum hose connected. |
FUEL PRESSURE SPECIFICATIONS (2.8L)
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| 1.8L Turbo | (1) 11-13 |
| 2.8L | 13.5-15.5 |
| (1) Add 4-6 ohms if injector is at operating temperature. |
| (1) | Add 4-6 ohms if injector is at operating temperature. |
IDLE SPEED & MIXTURE
Note. Idle speed and mixture (CO content) cannot be adjusted. Idle speed is controlled by the Throttle Valve (TV) control module. Mixture is adjusted by oxygen sensor control.
