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ENGINE ELECTRICALEFI Fuel System Maintenance and Testing1. Check battery voltage. Must be 12.2 orhigher and be capable of handling pumpload. If not, the fuel rail pressure test willbelow.No -+Yes~Charge, service, test and/or replacebattery. See battery service section.\•cConnect fuel pressure gauge and test asearlier outlined. Must read 35 to 37 psi.Pressure reading high-+Pressure reading low ~Inspect pump pickup lines, filters andvolume test pump. Is volume OK?No -+Yes~Check for pinched or kinkedpressure regulator return line. Is lineOK?No-+Yes ~Replace pressure regulator.Clean or replace return line.Replace pump.NOTE: It is very important to inspect fuel tank pick up screen and tank for floating plastic particles. It's possible tohave particles collect around screen as pump is running and float away after pump has stopped running.oc4.47 8/94
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