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Home >> GMC >> 1994 >> Jimmy 2D Utility, 4.3 W >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Preliminary Inspection & Adjustments >> Mechanical Inspection >> Check At AIR Pipe
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Check At AIR Pipe

Remove rubber hose at exhaust manifold AIR pipe check valve, and remove check valve. Install pressure gauge to hose and nipple via Propane Enrichment Device (J26911). Nipple should be inserted into exhaust manifold AIR pipe.