Fit For: For Nissan D21 1988-1994 For Nissan Pickup 1992-2008 Installation Tips: Preventing Premature Failure of Vacuum Boosters In Gas Vehicles Remove vacuum line from booster and check vacuum hose for gas odor. If present, the source of gas MUST be eliminated before replacing booster. • Check the operation of in-line check valves, vacuum vent valves or delay valves. Replace as necessary. • Check vacuum hose routing. Do not eliminate any loops in the line .
