Where is the fuel filter and oxygen fuel sensor

[littleorange124]

Where is the fuel filter and oxygen/fuel sensor? On a 1981 Fiat Spider its fuel injected

[azruss]

If the car is stock, the fuel filter will be underneath the car just behind the drivers seat. If you remove it, expect the entire gas tank to empty out on the ground. The O2 sensor is located in the exhaust manifold. It is under the heat shield. you can see the end of it with the wire coming out through a cutout in the shield. It just threads into the manifold.