Mercruiser (Mercury Marine) Cool Fuel Module Defect Investigation
Chimicles & Tikellis is investigating possible class action claims against Mercury Marine arising out of alleged defects in New Gen III Cool Fuel Modules, used on most Mercruiser engines since at least 2009. Mercruiser’s Cool Fuel Modules have reportedly been plagued with problems since they were introduced. In 2009, a new gen version was released which changed the Cool Fuel housing design to utilize screw-in plastic fittings to which the raw water cooling hoses attach. The threads tapped into the aluminum housing extend much further into the housing than the plastic fittings, however, leaving a section of the threading that is exposed to raw water. Because the walls are thin where the excess threading is located, the aluminum housing can leak cooling water into the fuel side of the housing. This sometimes appears as white spots on the fuel side of the housing at the location of the threading. When water leaks into the fuel side of the housing, it can cause the low-pressure and/or high pressure fuel pumps to fail, as well as potentially causing damage to rails, injectors, and other engine components.
If you have experienced fuel pump failure or water leakage with a New Gen III Cool Fuel Module, we would like to hear about your experience. Please fill out the “Email us about this Case” form below.