How to Test the Fuel Pump System in a MerCruiser?

Answer Gasoline-fired Mercruiser engines use both a low-pressure diaphragm-type fuel pump and an electric high-pressure fuel pump. The low-pressure pump supplies the high-pressure pump, the fuel-pressure ... Read More »

Top Q&A For: How to Test the Fuel Pump System in a MerCruiser

How to Change a Fuel Filter on a Mercruiser 3.0 Fuel Pump?

The Mercruiser 3.0 owner's manual does not specify how often to change the fuel filter. However, the fuel filter is disposable and needs to be changed when it looks clogged. The fuel filter on the ... Read More »

Fuel Pump Failure in a Mercruiser 4.3?

Fuel pump failure, whether in a Mercruiser engine equipped with a carburetor or in one with fuel injection, is almost a certainty at some point. You should pressurize your fuel system with the prim... Read More »

How to Remove Pressure From the Fuel System for Replacing the Fuel Pump?

The fuel system pressurizes fuel from the fuel tank to the engine. Fuel-injection systems meter the fuel injected for the cylinders by controlling the length of time the injectors are open. To inje... Read More »

How to Test an S10 Fuel Pump?

The fuel pump on a Chevrolet S10 pickup is responsible for drawing fuel from the gas tank at the rear of the vehicle and supplying it to the engine. If you suspect the fuel pump on your S10 is malf... Read More »