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Signs That You Need to Replace a MerCruiser Fuel Pump · Engine sputters or misfires at high speeds · Rapid fuel consumption · Poor acceleration · Increased engine .Free delivery over $100 · ‎30-day returns Ecoboost Vacuum Pump, Issues with electric fuel pump and regulator on mercruiser .. May 15, 2019 — So I've been having "issues" with my boat, its having some kind of fuel issue, since I've ruled out spark and air and replaced the carb with . Edwards 1.5 Vacuum Pump, Mercuriser 5.7 Electric Fuel Pump Issues. Aug 27, 2018 — I began with a low pressure / booster pump on the starboard side of the engine thinking that may be the issue and an easy fix, next I replaced . Edwards 12 Vacuum Pump, Electric High Low Pressure Fuel Pump Replacement .. Over time, your boat fuel pumps may wear out. Leaking fuel pumps are likely to eventually fail completely and cause the engine to abruptly stop running. 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