Hi,
It is not that expensive to change the fuel filter, especially if you can do it yourself. I bought a kit of plastic things to put around the fuel line, then it is pressed into the direction of the fuel filter, releasing the spring that holds the line on the filter. The filter is not under pressure while the engine is off (but about 60 PSI when running) yet might drip out a little fuel while changing the filter so have something to catch the fuel.
Mine was on the drivers side frame rail, yours probably is in the same location.
A clogged fuel filter is the #1 reason for poor fuel mileage and poor engine performance at higher throttle open. It might run fine while making say 100 HP, but at 300 HP it takes three times as much fuel, and that is when your problem starts.
Fred.
