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

KP8 - Check For TSB



- Is there a Technical Service Bulletin (TSB) authorizing removal of the octane adjust shorting bar?

Yes -- Go to KP9. KP9 - Remove Octane Adjust Shorting Bar

No -- Return to Diagnostic Routines to address spark knock concern. Symptom Related Diagnostic Procedures