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EGR Valve
- Operate engine to normal operating temperature. Allow engine to idle. On turbo models, remove hose from EGR valve. On non-turbo models, remove vacuum hose from EGR solenoid valve. See Fig 1
.
- On all models, use vacuum pump and apply 3.9 in. Hg to EGR valve. Replace EGR valve if rough engine idle or stalling does not exist. Reconnect hoses.
Courtesy of MAZDA MOTORS CORP.