1975 Datsun 280z FSM - Spooled up Racing

Discharge pressure check
1. Disconnect ground cable from
battery.
2. Disconnect ground wire (black)
from fuel pump.
3. Disconnect lead wire from the S
terminal of starter motor.
4. Remove cold start valve from
intake manifold.
5. Put cold start valve into a container
of min. 20 cc (1.22 cu ,-in)
capacity, and plug the container opening
with a rag.
'EF338
Fig. EF-86 Fuel injection from cold
start valve
6. Connect ground cable to battery.
7. Turn ignition switch to the
START position, and release fuel line
pressure.
8. Remove cold start valve from fuel
hose.
9. Connect a fuel pressure gauge
between cold start valve and fuel hose,
and install cold start valve on intake
manifold.
* !sl ^-^r-^^ F ue l pressure gauge
Cold start valve
Fig. EF-87
Connect fuel pressure
gauge
10. Disconnect ground cable from
battery.
11. Connect ground lead wire to
fuel pump.
12. Connect ground cable to battery.
13. Turn ignition switch to the
START position to operate fuel pump.
Engine Fuel
A fuel pressure of approximately
2.55 kg/cm 2 (36.27 psi) indicates a
good fuel discharge pressure. f
14. If'fuel pressure is not as specified,
replace fuel pressure regulator, and
repeat pressure discharge