ENGINE COMPRESSION
Check engine compression at specified cranking speed, with engine at normal operating temperature, all spark plugs removed and throttle wide open.
| Model | Standard psi (kg/cm 2 ) | Minimum psi (kg/cm 2 ) | Minimum RPM |
|---|---|---|---|
| Prelude (1) | 178 (12.5) | 135 (9.5) | 250 |
| (1) Maximum variation between cylinders is 28 psi (2.0 kg/cm 2 ). | |||
| (1) | Maximum variation between cylinders is 28 psi (2.0 kg/cm 2 ). |
ENGINE COMPRESSION
VALVE CLEARANCE
| Model | Intake In. (mm) | Exhaust In. (mm) |
|---|---|---|
| 2.2L | .009-.011 (.23-.28) | .011-.013 (.28-.32) |
| 2.3L | .003-.004 (.07-.11) | .006-.007 (.15-.19) |
VALVE CLEARANCE ADJUSTMENT SPECIFICATIONS
IGNITION COIL
| Application | Primary | Secondary |
|---|---|---|
| Prelude | .6-.8 | 14,000-22,000 |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
DISTRIBUTOR SENSORS
Triggering of fuel injectors is dependent upon pulsed voltage signals generated by TDC/CKP/CYP sensors. For testing of these signals, see BASIC TESTING article in the ENGINE PERFORMANCE Section.
| Application | Ohms |
|---|---|
| Prelude | 350-700 |
TDC/CKP/CYP SENSOR RESISTANCE
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|---|
| Prelude | 25,000 Maximum |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | NGK | |
|---|---|---|
| 2.2L Engine | ||
| F22A1 | ZFR5F-11 | |
| H22A1 | PZFR6F-11 | |
| 2.3L Engine | ZFR6F-11 | |
SPARK PLUG TYPE
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|---|---|
| Prelude | .039-.043 (1.0-1.1) | 13 (18) |
SPARK PLUG SPECIFICATIONS
Scheme 1
Scheme 2
IGNITION TIMING
| Application | Specification |
|---|---|
| Prelude | 13-17 @ 650-750 |
IGNITION TIMING (Degrees BTDC @ RPM)
FUEL PUMP
| Application | At Idle psi (kg/cm 2 ) | |
|---|---|---|
| 2.2L Engine (F22A1) | ||
| Vacuum Hose Disconnected | 36-43 (2.5-3.0) | |
| Vacuum Hose Connected | 28-35 (2.0-2.5) | |
| 2.2L Engine (H22A1) | ||
| Vacuum Hose Disconnected | 33-40 (2.3-2.8) | |
| Vacuum Hose Connected | 25-32 (1.8-2.3) | |
| 2.3L Engine (H23A1) | ||
| Vacuum Hose Disconnected | 36-43 (2.5-3.0) | |
| Vacuum Hose Connected | 28-35 (2.0-2.5) | |
| (1) Measure regulated fuel pressure with vacuum hose connected and disconnected from pressure regulator. | ||
| (1) | Measure regulated fuel pressure with vacuum hose connected and disconnected from pressure regulator. |
REGULATED FUEL PRESSURE (1)
INJECTOR RESISTANCE
| Application | Ohms |
|---|---|
| Injector | 1.5-2.5 |
| Injector Resistor | 5-7 |
FUEL INJECTOR RESISTANCE
IDLE SPEED & CO MIXTURE
For further information on idle speed adjustments and specifications, see ADJUSTMENTS article in the ENGINE PERFORMANCE Section.
| Application | RPM |
|---|---|
| Prelude (1) | 500-600 |
| (1) With Electronic Air Control Valve (EACV) disconnected, headlights and cooling fan off, and transmission in Neutral or Park. | |
| (1) | With Electronic Air Control Valve (EACV) disconnected, headlights and cooling fan off, and transmission in Neutral or Park. |
IDLE SPEED SPECIFICATIONS
| Application | CO Level |
|---|---|
| Prelude | 0.1% |
IDLE CO LEVEL
THROTTLE POSITION (TP) SENSOR
Note. For testing procedures, refer to TESTS W/CODES or SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE Section.
| Condition | Volts |
|---|---|
| Throttle Valve Fully Closed | .5 |
| Throttle Valve Wide Open | 4.5 |
THROTTLE POSITION (TP) SENSOR VOLTAGE