ENGINE COMPRESSION
| Application | Specification |
|---|---|
| Compression Ratio | 10.0:1 |
| Compression Pressure | 157-186 psi (11.0-13.0 kg/cm 2 ) |
| Minimum Compression Pressure | 106 psi (7.5 kg/cm 2 ) |
| Maximum Variation Between Cylinders | 43 psi (3.0 kg/cm 2 ) |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. Equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL
| Application | Primary | Secondary |
|---|---|---|
| Passat | (1) | (1) * |
| (1) Ignition coil pack located left side of cylinder head. When ignition coil triggered, spark is supplied to 2 spark plugs at one time. One spark plug fires during compression stroke, other plug fires during exhaust stroke (waste spark). Ignition coil specifications not available at time of publication | ||
| (1) | Ignition coil pack located left side of cylinder head. When ignition coil triggered, spark is supplied to 2 spark plugs at one time. One spark plug fires during compression stroke, other plug fires during exhaust stroke (waste spark). Ignition coil specifications not available at time of publication |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|---|
| Passat | Information Not Available |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Bosch |
|---|---|
| Passat | C9MCC |
SPARK PLUG TYPE
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|---|---|
| Passat | .028-.031 (.70-.80) | 18 (25) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER & TIMING MARKS
Note. For firing order/distributor rotation (Scheme 1)
Ignition coil pack is located on left side of cylinder head. When ignition coil is triggered, spark is supplied to 2 spark plugs at one time. One spark plug fires during compression stroke and the other plug fires during exhaust stroke (waste spark).
Scheme 1
IGNITION TIMING
Note. Always refer to underhood label for latest specifications.
| Application | Checking | Adjusting |
|---|---|---|
| Passat | 4-8 @ 2000-2500 | 5-7 @ 2000-2500 |
IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Specification |
|---|---|
| V6 | (1) 27-33 @ 4500 |
| (1) Vehicle not in BASIC ADJUSTMENT mode, engine oil temp. at 176°F (80°C), and Blue engine coolant temp. sensor connected. | |
| (1) | Vehicle not in BASIC ADJUSTMENT mode, engine oil temp. at 176°F (80°C), and Blue engine coolant temp. sensor connected. |
IGNITION TIMING ADVANCE (Degrees BTDC @ RPM)
FUEL PUMP
Note. Fuel pump performance measures fuel pressure and volume availability, not regulated fuel pressure.
| Application | Psi (kg/cm( 2 ) | Min. Vol. In 30 Sec: Pts. (L) |
|---|---|---|
| Passat (1) | 58 (4.0) | 1.0-1.4 (0.5-0.7) |
| (1) Using Adapter Cable (VAG 1348/3-2) between battery positive terminal and terminal No. 4 of fuel pump relay socket. Fuel pump energized, with 10-12 volts at fuel pump, and engine off. | ||
| (1) | Using Adapter Cable (VAG 1348/3-2) between battery positive terminal and terminal No. 4 of fuel pump relay socket. Fuel pump energized, with 10-12 volts at fuel pump, and engine off. |
FUEL PUMP PERFORMANCE
| Application/ Model | At Idle w/Vacuum psi (kg/cm 2 ) | At Idle w/o Vacuum (1) psi (kg/cm 2 ) |
|---|---|---|
| Passat | 50 (3.5) | 58 (4.0) |
| (1) With vacuum hose disconnected from fuel pressure regulator. | ||
| (1) | With vacuum hose disconnected from fuel pressure regulator. |
REGULATED FUEL PRESSURE
INJECTOR RESISTANCE
| Application | Ohms |
|---|---|
| Passat | 15.0-21.5 |
INJECTOR RESISTANCE SPECIFICATIONS
IDLE SPEED & MIXTURE
| Application | Idle RPM | CO Level % |
|---|---|---|
| Passat (1) | 650-750 | 0.3-1.5 |
| (1) Idle speed/fuel mixture (CO level) are not adjustable. | ||
| (1) | Idle speed/fuel mixture (CO level) are not adjustable. |
IDLE SPEED & CO LEVEL