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

Symptom Related Diagnostic Procedures

Spark Plug Condition Inspection Purpose
Inspecting spark plugs condition, can determine whether problem is related to a specific cylinder possibly all cylinders.

Procedure
1. Remove the spark plug.
2. Inspect spark plug condition.
3. Go to appropriate troubleshooting chart for further information.

Spark Plug Condition:

1. Wet/carbon Stuck On Specific Plug (Step 1 To 5):

2. Grayish White With Specific Plug (Step 1 To 2):

3. Wet/carbon Stuck On All Plugs (Step 1 To 6):

4. Grayish White With All Plugs (Step 1 To 2):