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)

Or, hide this message: temporarily or permanently

Distributor: Testing and Inspection

WARNING: High voltage in the ignition device system can cause strong electrical shock. Avoid direct contact to the vehicle body during the following spark test.




1. Remove the spark plug.
2. Connect the spark plug to a high-tension lead.
3. Hold the high-tension lead with insulated pliers 5 - 10 mm (0.20 - 0.39 in) from a ground.
4. Crank the engine and verify that there is a strong blue spark. If not, replace the spark plug or high-tension lead as necessary.