Low pressure submersible fuel pump in fuel tank.

What is the average or common mileage for these to begin to fail?? -

Especially if filters have been changed like clockwork regularly.

 

On average they don’t. People get hundreds of thousands of miles and thousands of hours out of them. It’s a robust pump.

 

General rule of thumb for me is to keep it about 1/4 tank or more, takes less time to fill when I stop and since the fuel cools the pump (and injection pump also) its just good practice....

Now if only I could get DW to do that on her car, I think the low fuel sensor is broke cause its always on..