EGR Valve

Apply vacuum to EGR valve using a hand-held vacuum pump. With 2.76 in. Hg (4.72 in. Hg on Van) applied to diaphragm, the EGR control valve should be fully open. See Fig 1 .

Fig 1: Cross-Sectional View of EGR Valve (Typical)

Courtesy of NISSAN MOTOR CO., U.S.A.