(5)
(5) spark plug gap
5. Inspect the electrodes and center porcelain
for deposits, corrosion, or carbon fouling.
If the corrosion or deposits are heavy,
replace the plug.
6. Make sure that a 1.0 mm wire-type feeler
gauge cannot be inserted between the spark
plug gap (5). If the gauge fits in the gap,
replace the plug with a new one.
7. With the plug washers attached, thread the
spark plugs in by hand to prevent cross-
threading.
8. Tighten each spark plug:
• If the old plug is good:
1/8 turn after it seats.
• If installing a new plug, tighten it twice
to prevent loosening:
a) First, tighten the plug:
1/2 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again: 1/8 turn
after it seats.
NOTICE
Improperly tightened spark plugs can damage
the engine. Too loose, you can burn a piston.
Too tight, you can damage the threads.
9. Reinstall the ignition coils and bolts, and
connect the ignition connectors.
10. Install both seats.
Spark Plugs
Servicing Your Honda
187