Testing - Mercury MerCruiser D2.8L D-Tronic Service Manual

FUEL DELIVERY PUMP AND FUEL FILTER

Testing

IMPORTANT: Avoid a decrease in engine performance. Restrictions of either fuel
supply or fuel return circuits will adversely affect engine performance.
TESTING FUEL DELIVERY PUMP PRESSURE
3. Remove the bleeder valve from the filter header.
4. Install a suitable barbed , tappered fitting with a short section of fuel hose connected.
5. Attach a suitable 0-100 kPa (0-15 PSI) pressure gauge to this hose.
Testing Delivery Pressure
6. If the measured value is not within specifications, repair as needed.
Page 5B-8
71967
c - Bleeder Valve
d - Suitable Barbed Fitting
e - Pressure Gauge
SERVICE MANUAL NUMBER 22
74726
90-860074--1 FEBRUARY 2002