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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temporarily or
permanently
Vacuum Delay Valve: Description and Operation
This valve--used on some vehicles--is located in the vacuum hose to the
EGR valve. Its purpose is to delay vacuum from bleeding down at the EGR valve. The vacuum is metered through a .005 inch orifice and requires up to 4 seconds from vacuum to bleed down completely.