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Home >> Isuzu >> 1985 >> Pickup Base, 2.2 U, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR System - Diesel >> Operation >> Vacuum Regulator Valve
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Vacuum Regulator Valve

This component reduces vacuum pump vacuum to 8.8 in. Hg. When vacuum switching valve number 1 is open, vacuum from the vacuum regulator valve opens EGR valve half way.

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