Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Spark Plug: Adjustments

Setting Spark Plug Electrode Gap:





Check the spark plug gap with a gap gauge. If the gap is not correct, adjust it by bending the ground -- center electrode.

Refer to the Vehicle Emission Control Information (VECI) label, (under hood).

If label is gone, or not readable, verify system and use the following specification.

Plug Gap 0.048 to 0.053 in