Mazda3Club.com : The Original Mazda3 Forum

Quote:

Originally posted by shumax
Go to the site below and click on the tab called "FUEL FILTER." In that shot you will see what looks like a fuel filter.....<snip>

I don't doubt there is one in the gas tank, but I think the true maint. fuel filter is the one in this pic.

Nope, it's not. I'm going to back up what Jeff and the FSM says. The zinc-plated box-shaped thingie in the upper half of the picture is the canister drainback check valve (CDCV). The hose leading from it goes to the charcoal canister. The white thingie in the upper right of the pic is the evaporative gas check valve. This "fuel filter" doesn't filter fuel going to the engine, it filters air going in and out of the evaporative emissions system.

Repeat after me: The ONLY fuel filters on your car are IN THE TANK. :D