ENGINE COMPRESSION
- Warm engine to normal operating temperature. Remove all spark plugs. Disconnect ignition coil primary wire connector.
- Hold throttle plate fully open. Crank engine, and note compression pressure.
| Application | Specification |
|---|
| MX-6 |
| 2.0L | 9.0:1 |
| 2.5L | 9.2:1 |
| 626 |
| 2.0L | 9.0:1 |
| 2.5L | 9.2:1 |
| Application | Minimum psi (kg/cm 2 ) @ RPM | Standard psi (kg/cm 2 ) @ RPM |
|---|
| 2.0L | 119 (8.4) @ 300 | 171 (12.0) @ 300 |
| 2.5L | 142 (10.0) @ 250 | 203 (14.3) @ 250 |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All piston engines are equipped with hydraulic valve lash adjusters. Valve clearance is not adjustable.
IGNITION COIL
| Application | Primary | Secondary |
|---|
| MX-6 & 626 | .58-.86 | 11,500-18,500 |
DISTRIBUTOR SENSORS
Note. For models not listed in tables, see BASIC TESTING article in the ENGINE PERFORMANCE section for crank angle sensor testing.
| Application | Ohms |
|---|
| MX-6 & 626 2.5L (At Crankshaft Pulley) | 520-580 |
CRANK ANGLE SENSOR RESISTANCE
HIGH TENSION WIRE RESISTANCE
High tension wire resistance should not exceed 4900 ohms per foot.
SPARK PLUGS
| Application | NGK No. |
|---|
| 2.0L | BKR5E-11 or BKR6E-11 |
| 2.5L | ZFR5F-11 or ZFR6F-11 |
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|
| MX-6 & 626 | .040 (1.0) | 13 (18) |
SPARK PLUG SPECIFICATIONS
Firing Order & Distributor Rotation (2.0L). Scheme 1
Scheme 1: Firing Order & Distributor Rotation (2.0L)
Firing Order & Distributor Rotation (MX-6 & 626 2.5L). Scheme 2
Scheme 2: Firing Order & Distributor Rotation (MX-6 & 626 2.5L)
Locating Ignition Timing Marks (Typical). Scheme 3
Scheme 3: Locating Ignition Timing Marks (Typical)
IGNITION TIMING
| Application | Man. Trans. | (1) Auto. Trans. |
|---|
| 2.0L (2) | 12 @ 700 | 12 @ 700 |
| 2.5L (2) | 10 @ 650 | 10 @ 650 |
| (1) Place automatic transmission in Park. (2) Connect jumper wire between terminals TEN and GRN of diagnostic connector. |
| (1) | Place automatic transmission in Park. |
| (2) | Connect jumper wire between terminals TEN and GRN of diagnostic connector. |
IGNITION TIMING SPECIFICATIONS
FUEL PUMP
Note. Fuel pump performance measures fuel pressure and volume availability, not regulated fuel pressure.
| Application | Pressure: psi (kg/cm 2 ) | Min. Vol. In 30 Sec.: Pts. (L) |
|---|
| 2.5L | 72-92 (5.5-6.5) | (1) |
| 2.0L | 64-92 (4.5-6.5) | (1) |
| (1) Information is not available. |
| (1) | Information is not available. |
| Application | At Idle W/ Vacuum: psi (kg/cm 2 ) | At Idle W/O Vacuum: psi (kg/cm 2 ) |
|---|
| MX-6 & 626 | 31-38 (2.2-2.7) | 38-46 (2.7-3.2) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| MX-6 & 626 | 12-16 |
IDLE SPEED & MIXTURE
| Application | M/T: RPM | (1) A/T: RPM |
|---|
| MX-6 & 626 (2) |
| 2.0L | 700 | 700 |
| 2.5L | 650 | 650 |
| (1) Place automatic transmission in Park. (2) Connect jumper wire between terminals TEN and GRN of diagnostic connector. |
| (1) | Place automatic transmission in Park. |
| (2) | Connect jumper wire between terminals TEN and GRN of diagnostic connector. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR
Note. Throttle position sensor on MX-6 2.0L and 626 2.0L is not adjustable.
Note. For information on connector terminal identification and test conditions specified in the following tables, see ADJUSTMENTS article in the ENGINE PERFORMANCE section.
| Test Condition (1) | (2) Continuity |
|---|
| .006" (.15 mm) | Yes |
| .020" (.5 mm) | No |
| (1) Insert feeler gauge of specified thickness between throttle lever and throttle stop screw. (2) Check continuity with ohmmeter connected between TP sensor terminals "E" and IDL. |
| (1) | Insert feeler gauge of specified thickness between throttle lever and throttle stop screw. |
| (2) | Check continuity with ohmmeter connected between TP sensor terminals "E" and IDL. |
