Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
FUEL SYSTEM PRESSURE TEST ALL ENGINES
Circuit Description:
When the fuel pump is running, fuel is delivered to the injector(s) and then to the regulator where the system pressure is controlled to about 62 to 90 kPa
(9 to 13 psi). Excess fuel is then returned to the fuel tank.
