There are a few precautions you will need to take when changing the fuel filter in your vehicle:
Remember that in a car with a high-pressure system, you need to relieve the pressure before you disconnect the fuel lines from the filter. In a majority of vehicles, this can be done by removing the fuse that controls the fuel pump
, and then idling the car until it runs out of gas.
In some cars you can just remove the gas cap. But you need to check and make sure you can do that before you do it.
The fuel filter will only work properly if it has been placed so that the flow travels in the right direction. This should be easy enough as most fuel filter are clearly marked for your convenience, with one side showing “in” and the other “out”. The inlet should be connected to the fuel lines that come from the fuel tank (which is underneath the back of the vehicle), and the outlet should be connected to the fuel lines that go to the engine. On the odd occasion, the fuel filter may have different fittings, it can only be installed in one direction.
It is recommended by some mechanics that you should change your fuel filter once a year
. But, to be on the safe side you should definitely do it at least every two years. However, if you live in a high-pollution area, or if you drive your vehicle more than the average person, then it will need more attention.