Water Separating Filter Inspection - Mercury 150 EFI Service Manual

Results: If low or no fuel flow is present, inspect fuel hose for restrictions. Inspect anti-siphon valve and boat
fuel tank for proper fuel delivery. If fuel flow is present, remove, disassemble and inspect pulse fuel
pump. All fragments of failed pump must be located before reassembly.
a -

Water Separating Filter Inspection

Remove fuel/water separator filter. Inspect filter for debris. Replace filter as required.
1. Place emergency stop switch in OFF position to prevent engine from starting.
2. Remove vapor separator drain plug and place a clean container under drain.
3. Crank engine over with starter.
Results: If fuel flow is present, fuel is being delivered to electric fuel pump. If fuel is not present, refer to Vapor
Separator Float Test.
90-883728 JULY 2001
Pulse Fuel Pump
a
58799
FUEL INJECTION
58891
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