Fuel pumps supply the right amount of fuel at the right time for ignition, as well as, regulate the engine through fuel control. The pump feeds fuel through the injection lines to the injectors which provide fuel to the cylinders. 

What do fuel pumps and injectors do?
Fuel pumps supply the right amount of fuel at the right time for ignition, as well as, regulate the engine through fuel control. The pump feeds fuel through the injection lines to the injectors which provide fuel to the cylinders. How can I tell I have a fuel pump problem? Fuel pumps and injectors usually provide satisfactory service for about 75,000 miles. They can go quite a bit longer. Some of the signs to look for include:

1. loss in fuel economy
2. loss in power or acceleration
3. hard starting problems.

What do I do if I have one of these symptoms?
If you notice a performance problem,
there are some steps you can take to rectify the problem.

1. Change the filters.

2. Use fuel conditioners.
They can increase mileage and power. Contaminated fuel can cause clogged filters even if they have just been changed.

3. Have it checked out by a qualified mechanic.
Fuel pumps and injectors can be replaced or rebuilt.