LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> BMW >> 2000 >> M5 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel System >> Fuel Delivery >> Fuel Pressure Check (Lack Of Power)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Pressure Check (Lack Of Power)

Run engine at idle and check fuel pressure. See FUEL PRESSURE REGULATOR . Disconnect vacuum hose from fuel pressure regulator, simulating wide open throttle. If fuel pressure does not increase 5.8-10.1 psi (.40-.71 kg/cm2 ), replace vacuum hose and repeat test. If fuel pressure still does not increase, replace fuel pressure regulator.