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LEMON is the spiritual successor to CHARM, I recommend you try it!
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EGR Control Solenoid: Testing and Inspection
Fig. 16 EGR solenoid valve.:
1.
Start engine and run at idle.
2.
Remove plug,
Fig. 16. 3.
Blow air into port ``A'' and ensure air flows from port ``B.''
4.
Disconnect electrical connector from
EGR solenoid valve.
5.
Blow air into port ``A'' and ensure air flows from port ``C.''
6.
If operation is not as described, replace valve.
