Join Date: May 2011
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I put in-line fuel filters on the frame just past the tank selector valve. While I was at it, I actually put two: the first a 10 micron water separator, and the second a 3 micron sediment filter. When you count the fuel filter on the engine, all my fuel actually goes through three filters before reaching the injectors.
Although the mechanical fuel pump will pull through all my filters, I added an auxiliary 12 volt pusher fuel pump on the frame with the auxiliary filters, which pushes fuel to the engine at about 5 psi. This assures the extra filters will not overburden the engine's fuel pump especially as they load up with debris.
I used Wix (Napa) fuel filter heads. They have extra ports on them, so while I was at it, I also put an electric fuel pressure gauge reading from one of the ports, which can tell me when the auxiliary filters need changing and assures me the auxiliary pump is working.
Although I've probably overdone it, my fuel surely is clean and I sleep well at night. And the factory fuel filter is rarely changed nowadays since the fuel is quite clean by the time it reaches there.
BTW, I also have locking fuel caps.
Yep, I'm paranoid. But that isn't necessarily crazy, as the OP has found out. It's not that unusual to get a load of debris from the filling station either.