Fuel Pump Capacity

Position one end of the sample hose on Adapter (3019) into a clear, one quart, graduated container. Follow the procedures for the FUEL SUPPLY PUMP OUTLET PRESSURE  test and open clamp on sample hose, allowing fuel to flow into fuel container, for 30 seconds. Record volume. On dual tank vehicles, check both tanks. Volume should be at least one pint in 30 seconds at idle, no load. If pressure and volume are okay, go to CHECK FUEL RETURN PRESSURE  test. If pressure is okay and volume is not, go to next test. If volume is okay and pressure is not, replace fuel supply pump and repeat FUEL FILTER OUTLET PRESSURE  test. If pressure and volume are both inadequate, go to next test.