EGR Backpressure Transducer: Testing and Inspection

BACK-PRESSURE TRANSDUCER (BPT) VALVE TEST:
1. Plug one of the "A" ports.

EGR-BPT Leak Test:

2. Fill a length of clear tubing with water to within 3 inches of the ends.
3. Attach one end of tubing to "B" port of BPT valve.
4. Allow at least 2 inches of air between BPT Valve and water level (do not allow water to enter BPT Valve).
5. Loop tubing into a "U" shape.
6. Raise open end of tubing until the water level on open side of tubing is 50 mm (1.97 in.) higher than water level on the BPT side of tubing. This will apply the correct amount of pressure to the valve.
7. Apply vacuum to other "A" port. Vacuum should hold steady.
8. Slowly lower open end of tubing, as water level difference drops below 50 mm (1.97 in.) vacuum should bleed off. If BPT fails above test replace valve.