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Pressure Regulator Fuel Pressure
- Disconnect negative battery terminal. Using a shop rag wrapped around main fuel hose, disconnect main fuel hose from fuel line. Using 3-way connector, connect pressure gauge to main fuel line.
- Reconnect negative battery terminal. Start engine. Disconnect vacuum hose between pressure regulator and pressure regulator control valve at control valve. See Figure
.
- With vacuum hose disconnected and engine idling, fuel pressure should be approximately 37 psi (2.6 kg/cm2
). Reconnect vacuum hose to control valve and measure pressure. Fuel pressure should be approximately 28.5 psi (2 kg/cm2
). If not, replace fuel pressure regulator.