The DigiVac Fail-Safe FILTER ALERT System works on the principal of maintaining fuel flow. As the filter does its job and collects contaminants, the filter flow is reduced. As the flow is reduced, the lift pump has to work harder to pull fuel to the engine. There is a point where the filter is too clogged to support the flow necessary for the running of the engine. When there is not enough fuel flow, the engine stops.
Unfortunately, a filter is very likely to clog in precisely the kind of situation when you need a reliable running engine the most. When rough seas toss the boat, they also mix-up the contents of the fuel tank, and more contaminants are likely to find their way to the fuel filter. |