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Home >> Isuzu >> 1992 >> Trooper LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> EGR Valve Testing Procedures >> Impulse, Stylus & 1988 Trooper II >> Backpressure Transducer
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Backpressure Transducer

Disconnect all vacuum and exhaust pipe hoses. Blow into Black hose. Apply vacuum to fitting from ported vacuum source. Vacuum should pass to other side until pressure at bottom fitting is released.