Specifications

FUEL PUMP - ELECTRIC

Article Text

1984 Mazda RX7

For iluvmyrx7.com

Saturday, June 08, 2002 10:48PM

ARTICLE BEGINNING

1984 Electric Fuel Pump

MAZDA

RX7, PICKUP

DESCRIPTION & OPERATION

Pulsating electric fuel pump is mounted near fuel tank on

frame member. Power is supplied when ignition switch is in "RUN"

position. This circuit is protected by a 15 amp fuse (20 amp on RX7)

at fuse panel. In-line fuel filter must be changed within recommended

mileage interval before performing tests. If in doubt, install new

filter.

TESTING

PRESSURE TEST

Fuel Pump (Carburetted Models)

1) Remove air cleaner assembly and disconnect fuel line at

carburetor. Connect pressure gauge with restrictor and a flexible

hose. See Fig. 1. Disconnect connector from fuel pump cut relay and

connect a jumper wire. See Fig. 2.

2) Turn ignition on and briefly vent the system into

container by opening hose restrictor. Pressure should stabilize at

2.8-3.6 psi (.19-.25 kg/cm

). If not within specifications, and lines

and filter are in satisfactory condition, replace pump.

Fig. 1: Fuel Pump Pressure and Volume Test

Fig. 2: Installing Jumper Wire

Fuel Pump (Fuel Injected Models)

1) Disconnect battery negative cable from battery. Disconnect