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

Valve Guide: Testing and Inspection

Valve guides, checking

Special tools and equipment

- VW387 dial gauge holder
- Dial gauge

Test sequence

- Insert a new valve into guide. Valve stem tip must seal with guide. Due to differences in valve stem diameter, make sure that only intake valves are used to check intake guides, and only exhaust valves are used to check exhaust guides.
- Measure side play. Wear limit: 0.8 mm

If side play is exceeded:
- Replace cylinder head.