Supra L6-3.0L DOHC Turbo (7M-GTE) (1987)
2. REMOVE SPARK PLUGS
(a) Remove the high-tension cords.
(b) Using a plug wrench(1 6 mm), remove the spark plugs.
3. VISUALLY INSPECT SPARK PLUGS
Check the spark plug for thread or insulator damage.
If abnormal, replace the plug.
Recommended spark plugs:
7M-GE
ND PQ16R
NGK BCPR5EP11
7M-GTE
ND PQ20R-P8
NGK BCPR6EP-N8
4. INSPECT ELECTRODE GAP
Maximum electrode gap:
7M-GE 1.3 mm (0.051 in.)
7M-GTE 1.0 mm (0.039 in.)
If the gap is greater than maximum, replace the plug.
Correct electrode gap of new plug:
7M-GE 1.1 mm (0.043 in.)
7M-GTE 0.8 mm (0.031 in)
If adjusting the gap of a new plug, bend only the base of the ground electrode, do not touch the tip.