Fuel System Pressure Test
NOTE:
For fuel pump circuit testing, see FUEL SYSTEM ELECTRICAL CIRCUIT in NO START DIAGNOSIS .
- Turn ignition off. Install tee adapter and pressure gauge at injection pump. Start engine and measure fuel pressure.
- If fuel pressure is not 4 psi (.28 kg/cm2 ), check fuel lines and fuel tank sending unit for restriction. If fuel lines and sending unit are okay, replace fuel pump.