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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Functional Check

Functional check

- During check or repairs of the exhaust system, confirm that the clearance between the body and the floor is adequate.
- Adequate care should be taken to prevent damage due to heating or vibrations in the body panel as it may lead to exhaust gas entering the cabin.
- Check for loose or damaged connectors and leakage of exhaust gas.
- Check for degradation, cracks or damage to the clamp or rubber.
- If the pipe or silencer is damaged or has a dent then repair or replace it.
- Check for dents, damage, holes or cracks due to corrosion, and abnormal noise during operation.
- If CO or HC value in the exhaust gas increases when measuring the exhaust gas (vehicle inspection, etc.), replace the silencer (built-in catalyst)