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

California


3A-C, 4A-C & 4A-LC ENGINES, CALIFORNIA

1. Inspect hoses and tubes for cracks, kinks, damage and improper connections, and repair as needed.
2. Disconnect vacuum hose from air suction shut-off valve and plug hose.
3. Remove air cleaner cover and start engine.
4. Reconnect vacuum hose while observing valve. With engine running at idle, a bubbling noise should be heard from AS valve inlet.
5. If vacuum signal is satisfactory, test AS valve assembly.