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

Test 13: Ignition Scope Test




GENERAL PINPOINT TEST 13: IGNITION SCOPE PINPOINT TEST

CAUTION:Fouled plugs or a damaged ignition may cause high catalyst temperatures. Check components next to the catalyst and muffler for heat damage.

2.3L





4.0L









Step 1-Step 3:





Step 4-Step 5:





Step 6-Step 7:





Step 8-Step 10:





Step 11-Step 13:





Step 14: