1975 Datsun 280z FSM - Spooled up Racing

Engine Fuel
Caution: When connecting water temperature
sensor harness, always
keep it away from high tension
wire.
Notes:
a. Be sure to install copper washer
when installing water temperature
sensor.
b. After installing water temperature
sensor, add cooling water with a
proper amount of antifreeze.
5. Thermotime switch
1. Remove radiator filler cap. Drain
cooling water by opening drain valve
located on the lower side of radiator.
Note: If cooling water is hot, give it a
chance to cool down.
2. Disconnect water hose at thermostat
housing.
3. Disconnect ground cable from
battery.
4. Disconnect lead wires from
thermal transmitter, and remove
thermal transmitter.
5. Disconnect electric connector
from thermotime switch.
6. Remove thermotime switch by
turning it counterclockwise.
EF418
Fig. EF-100 Water temperature sensor
7. To install thermotime switch, reverse
the order of removal.
6. Cold start valve
1. Disconnect ground cable from
battery.
2. Disconnect ground lead wire
(black) from fuel pump.
3. Disconnect lead wire from the S
terminal of starter motor.
4. Remove two screws securing cold
start valve to intake manifold, and
remove cold start valve.
5. Connect ground cable to battery.
6. Put cold start valve in a container
of min. 20 cc (1.22 cu in) capacity.
Turn the ignition switch to the
START position, and release fuel line
pressure.
EF322 • f ^^H^VSJTV*
Fig. EF-102 Fuel injection from
cold start valve
7. Unfasten clip and disengage cold
start valve from fuel hose.
Note: Place a container to receive fuel
left in fuel hose.
8. To install cold start valve, reverse
the order of removal.
Fuel hose clamp tightening torque:
0.10 to 0.15 kg-m
(0.723 to 1.085 ft-lb)
7. Relay
1. Disconnect battery ground cable.
2. Remove two screws securing relay
to side dash.
3. Disconnect harness connector.
4. To install relay, reverse the order
of removal.
Fig. EF-101 Thermotime switch
8. Throttle valve switch
1. Disconnect battery ground cable.
2. Disconnect throttle valve switch
harness connector.
3. Remove two screws securing
EF-61
EF419
Fig. EF-103 Electronic fuel injection relay
throttle valve switch to throttle chamber.
4. Slowly pull throttle valve switch
forward.