Operation CHARM: Car repair manuals for everyone.
Home >> Jaguar >> 1987 >> XJ-S V12-5.3L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Air Injection >> Vacuum Delay Valve >> Service and Repair
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

Vacuum Delay Valve: Service and Repair



1. Remove right hand air cleaner cover and filter element.
2. Note position of and disconnect vacuum lines, then remove valve.
3. Reverse procedure to install, ensuring vacuum lines are properly connected.



pro multis · About Operation CHARM