3000GT AWD V6-2972cc 3.0L DOHC Turbo (1991)
c. Mirage spark plugs may be cleaned at 100% of the recommended cleaning time for any standard plug cleaning machine.
d. Spark plugs for the 300OGT MUST NOT be cleaned for more than 75% of the recommended cleaning time for any standard plug cleaning machine.
4. Remove the spark plug from the plug cleaning machine. Use compressed air to eliminate all traces of cleaning compound from the spark plug.
Setting Spark Plug Gap
5. Check the electrode gap of each spark plug. The gap for both the 1991 300OGT and Mirage is 1.1 mm.
6. If the gap is out of specification:
a. On the 3000GT, the spark plug must be replaced. The gap is not adjustable due to the platinum construction of the electrode tips. Refer to the
illustration on page 3 of this TSB.
b. On the Mirage, reset the gap using a standard gapping tool. Refer to the illustration on page 3 of this TSB.
7. With spark plugs still removed, adjust the valve clearances on the Mirage (1.5 liter engine) to the following specifications:
Engine Coolant at 176 to 203 degrees F (80 to 95 degrees C)
Intake
0.15 mm (.006 in.)
Exhaust 0.25 mm (.010 in.)
8. Reinstall the spark plugs.
WARRANTY INFORMATION
Labor
Time
Operation
Vehicle
Operation
Allowed
Code
3000GT
Remove and Install Spark Plugs
0.8 hrs.
16351010
3000GT
Clean Spark Plugs
0.2 hrs.
16351000
TOTAL:
1.0 hrs.
Mirage (1.5L)
Remove and Install Spark Plugs
0.3 hrs.
16351010
Mirage (1.5L)
Clean Spark Plugs
0.2 hrs.
16351000
Mirage (1.5L)
Adjust Valve Clearance
0.5 hrs.
11321500
TOTAL:
1.0 hrs. (1.5L)