Mazda MX-3

Where is the fuel filter located on a 1994 Mazda mx3?

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June 01, 2007 1:54PM

I can only answer for the V6, although I think the 4 is roughly the same. On the V6, there are two, one in the gas tank (more a screen than a filter) and an inline one in the engine compartment. Chances are it's the second one you want, it's located on the firewall just behind the exhaust headers, underneath and central from the battery tray (US spec anyhow). It's a royal pain to get to, you are going to get gas on you, the process involves removing the battery and tray, and going under and over the car a lot to get to it, but it's a few clamps and a few (3 or so) support bracket screws once you get to it. It's about the size of a soda can (maybe a little smaller, I don't remember exactly). Read the "online shop manual" at "" under the Technical section, you will want/need to depressurize the injectors before releasing the hoses if you don't want gas to spray everywhere. Once you have followed the steps, keep a bucket under the car to catch the seemingly 200 gallons of gas in the fuel line (from the engine side, really probably 20oz or so), and have a way to either pinch off (not recommended on our old cars) or plug the fuel tank side of the line or it will siphon all the gas out of the tank (at least as far as I can tell). Other than that it's just a bunch of knuckle busting in close quarters.