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Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3384
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Mercury 4 stroke will not stay running no codes fuel pump

Customer Question

Mercury 4 stroke will not stay running no codes fuel pump pressure .is 40 lbs starts for a second then shuts down
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Customer: changed cpu and does the same thing
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Customer: should the fuel pressure be higher ?
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Submitted: 7 months ago.
Category: Boat
Expert:  Charles replied 7 months ago.

Hello, my name is ***** ***** will assist you.

The fuel pressure is right on spec, but you still may not be getting enough to the injectors. Remove the filters from the inlet side of the injectors and see if the engine will now run. i have seen many of these engines with the filters clogging a bit over time, and this will get it running again.

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