MX-6 L4-1991cc 2.0L DOHC (1993)
EGR Backpressure Transducer: Testing and Inspection
Modulator Valve Check
1.
Remove valve.
2.
Plug #3 port and attach vacuum pump to #1 port.
3.
Blow into exhaust gas port. Operate vacuum pump and verify vacuum is held at #3 port.
4.
Release exhaust gas port and verify vacuum released at #3 port.
5.
If not as specified, replace modulator valve.