Mercury MerCruiser D2.8L D-Tronic Service Manual page 567

SERVICE MANUAL NUMBER 22
13. Check for fuel leaks at injection pump and injectors using a piece of paper placed near
the suspect fitting or sleeve nut to be checked. The paper should show leaks if present.
Do NOT use your fingers to feel for leaks! Watch for fuel spray on paper. Repair as
needed.
14. Retest until certain no leaks are present.
NOTE: Be certain to observe precautions about the use of safety glasses! It is sometimes
helpful to use compressed air to dry the area near fitting and sleeve nuts when checking for
fuel leaks.
15. Allow engine to reach operating temperature. Once again check for leaks as previously
outlined and correct as needed.
Dispose of fuel soaked rags, paper, etc. in an appropriate air tight, fire retardant
container. Fuel soaked items may spontaneously ignite and result in a fire hazard
which could cause serious bodily injury or death.
Make sure no fuel leaks exist, before closing engine hatch.
TESTING FUEL RETURN PRESSURE
1. Install a suitable 0-100 kPa (0-15 PSI) pressure gauge in the fuel return hose.
2. If measured value is greater than specified, repair as needed.
Testing Return Pressure
90-860074--1 FEBRUARY 2002
a - Suitable Pressure Gauge
b - Fuel Return Hose
c - Fuel Return To Fuel Tank
WARNING
WARNING
a
b
INJECTION PUMP
c
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