Fuel Pump Failure in a Mercruiser 4.3?

Answer 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 »

Top Q&A For: Fuel Pump Failure in a Mercruiser 4.3

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 »

How to Test the Fuel Pump System in a MerCruiser?

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 »

Fuel Pump Failure Signs?

Some of the most annoying problems encountered with a vehicle are caused by a faulty fuel pump which can malfunction intermittently. During normal driving, the symptoms will appear, but they are di... Read More »

Symptoms of Fuel Pump Failure?

Weak and failing fuel pumps can be difficult to diagnose. While the symptoms may be easy to identify, they also may be confused with other mechanical problems. Learning the warning signs of a faili... Read More »