Hyundai TG1000i Manual page 59

SPARK PLUG SERVICE
5. Visually inspect the spark plug. Replace it if the electrode is worn, or if the insulator is cracked,
chipped or fouled. Clean the spark plug with a wire brush if it is to be reused.
6. Measure the spark plug electrode gap with a wire-type feeler gauge.
The gap should be 0.024-0.028in (0.6-0.7mm). Correct as necessary by carefully bending the side
electrode.
7. Check the sealing washer is in good condition, and thread the spark plug in by hand to prevent
cross-threading.
8. After a new spark plug has been seated by hand, it should be tightened 1/2 turn with a wrench
to compress its washer. If a used plug is being reinstalled, it should only require 1/8 to 1/4 turn
after being seated.
9. Reinstall the spark plug cap on the spark plug securely.
10. Reinstall the spark plug maintenance cover.
CAUTION
■A loosen spark plug can overheat and damage the engine. Overheating the
spark plug can damage the threads in the cylinder head.
■Never use a spark plug with an improper heat range.
■Never use a spark plug without damping resistance or it will cause no AC
output.
ENGLISH
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