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 | Amp Hr. Rating |
|---|
| A4 | 70 |
| Application | Quantity |
|---|
| Crankcase (Includes Filter) | 5.3 Qts. (5.0L) |
| Cooling System (Includes Heater) | 6.9 Qts. (6.5L) |
| Automatic Transmission |
| Initial Fill (1) | 9.25 Qts. (8.8L) |
| Fluid Change (1) | (2) 2.7 Qts. (2.6L) |
| Final Drive (Differential) |
| Front Differential |
| Initial Fill (SAE 75W-90 Synthetic) | .84 Qt. (.8L) |
| Fluid Change (SAE 75W-90 Synthetic) | .79 Qt. (.75L) |
| Center Differential (Quattro) |
| Initial Fill (SAE 75W-90 Synthetic) | .84 Qt. (.8L) |
| Fluid Change (SAE 75W-90 Synthetic) | .79 Qt. (.75L) |
| Rear Differential (Quattro) |
| Initial Fill (SAE 90W) | 2.0 Qts. (1.9L) |
| Fluid Change (SAE 90W) | 1.9 Qts. (1.8L) |
| Manual Transmission (SAE 75W-90 Synthetic) |
| Except Quattro | 2.4 Qts. (2.3L) |
| Quattro | 2.9 Qts. (2.7L) |
| (1) Use fluid ESSO EGL 71141. Color is Yellow. Do not use additives. (2) Fluid change capacity is up to 3.7 qts. if pan is removed. |
| (1) | Use fluid ESSO EGL 71141. Color is Yellow. Do not use additives. |
| (2) | Fluid change capacity is up to 3.7 qts. if pan is removed. |
SERVICE INTERVALS & SPECIFICATIONS
| Component | Interval (Miles) |
|---|
| Air Filter | 30,000 |
| Cam Timing Belt | 90,000 |
| Coolant | 60,000 |
| Fuel Filter | 15,000 |
| Oil & Filter | 7500 |
| Spark Plugs | 37,000 |
DRIVE BELT INSPECTION
Note. DO NOT install drive belt in opposite direction. Damage to belt may occur.
- Mark direction of belt travel before removing belt (if reusing belt). Remove drive belt guard. Using a 17-mm wrench, rotate tensioner clockwise to loosen belt tensioner. Secure belt tensioner using Drift (3204).
- Remove drive belt. Ensure belt has no splits, cracks or other damage. Replace drive belt if necessary. To install, reverse removal procedure. Install drive belt onto tensioning pulley last. Using a 17-mm wrench, hold tensioner and remove drift. Allow tensioner to move against drive belt. Install drive belt guard.
ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Ratio | 10.3:1 |
| Normal Compression Pressure | 131-203 psi (9.0-14.0 bar) |
| Minimum Compression Pressure | 109 psi (7.5 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. A4 is equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL(S)
| Application | Primary | Secondary |
|---|
| 2.8L | 5 (1) | 9000-14,000 |
| (1) Maximum resistance. |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
Information is not available.
SPARK PLUGS
| Application | Audi Part No. | NGK |
|---|
| 2.8L | 101 000 033 AA | BKUR6ET-10 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| 2.8L | .035-.041 (.9-1.0) | 22 (30) |
SPARK PLUG SPECIFICATIONS
Scheme 1
IGNITION TIMING
Note. Ignition timing is controlled by PCM and is not adjustable.
FUEL PUMP
| Function | Specification |
|---|
| System Pressure |
| With Engine Idling | (1) 55-61 psi (3.8-4.2 bar) |
| With Engine Idling (Warm) | (2) 46-55 (3.2-3.8 bar) |
| Residual Pressure |
| Engine Cold | (3) 32 psi (2.2 bar) |
| Engine Hot | (3) 44 psi (3.0 bar) |
| Fuel Injector/Injection Rate | (4) 2.9-3.7 oz. (86-109 ml) |
| (1) With fuel pressure regulator vacuum hose disconnected. (2) With fuel pressure regulator vacuum hose connected. (3) After 10 minutes. (4) Per 30 seconds of operation. |
| (1) | With fuel pressure regulator vacuum hose disconnected. |
| (2) | With fuel pressure regulator vacuum hose connected. |
| (4) | Per 30 seconds of operation. |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| Bosch | 15-17 |
| Siemens | 13.5-15.5 |
IDLE SPEED & MIXTURE
| Application | Specification |
|---|
| Idle Speed | 650-750 |
| CO Content | 0.2-1.2% Of Volume |
| (1) Controlled by PCM and not adjustable. |
| (1) | Controlled by PCM and not adjustable. |
