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

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EGR Valve, Checking

EGR valve, checking

Work sequence






Note: EGR valve (arrow) is operated mechanically by throttle valve lever

Checking in Idle speed position

- run engine at idle
- check pipe to EGR valve
pipe should not warm up

Checking In full throttle position

- disconnect rod for EGR valve
- run engine at idle
- push lever on EGR valve to full throttle position
- check pipe to EGR valve
pipe should not warm up