EGR Backpressure Transducer: Testing and Inspection

BPT Valve:

1. Apply light air pressure to the exhaust gas port (lower) and confirm that air does not leak.
2. Apply vacuum to the EGR Valve port. Confirm that vacuum does not leak until light air pressure is applied to the exhaust gas port (lower).
Replace the BPT Valve if it fails the above tests.