Inspection
INSPECTIONNOTE: In this section, the terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50 °C (14 to 122 °F). "Hot" means approximately 50 to 100 °C (122 to 212 °F).
1. INSPECT SPARK PLUG
NOTE:
- Do not use a wire brush for cleaning.
- Do not attempt to adjust the electrode gap of a used spark plug.
a. Check the electrode.
1. Using a megaohmmeter, measure the insulation resistance. Insulation resistance: 10 MOhms, or higher If the resistance is less than the specified value, proceed to step (d).
HINT: If an ohmmeter is not available, perform the following simple inspection instead.
b. Alternative inspection method:
1. Quickly accelerate the engine to 4,000 rpm 5 times.
2. Remove the spark plug.
3. Visually check the spark plug. If the electrode is dry, the spark plug is functioning properly. If the electrode is damp, proceed to steps (c), d.and (e).
c. Check the spark plug for any damage on its thread and insulator.
If there is a damage, replace the spark plug. If not, reinstall the spark plug.
Recommended spark plug
DENSO made SK20R11
NGK made IFR6A11
d. Check the spark plug electrode gap.
Maximum electrode gap for used spark plug: 1.3 mm (0.051 in.)
If the gap is greater than the maximum, replace the spark plug. Electrode gap for new spark plug: 1.0 to 1.1 mm (0.039 to 0.043 in.)
NOTE: If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip. Never attempt to adjust the gap of a used plug.
2. INSPECT CRANKSHAFT POSITION SENSOR
a. Measure the resistance between the terminals.
If the resistance is not as specified, replace the sensor.
3. INSPECT CAMSHAFT POSITION SENSOR
a. Measure the resistance between the terminals.
If the resistance is not as specified, replace the sensor.