where is the fuel filter anyway? - PT Cruiser Forum Jul 22, 2009Ok about the fuel filter on an 06 PT Cruiser, if it's inside the gas tank do I have to take it to a mechanic shop to get it replaced? Also I'm being told to replace it every 30K, is that right? Sorry I'm not familiar w/these things and unfortunately don't have anyone to How Do You Know If Your PT Cruiser Has a Clogged Fuel A clogged filter is one that is filled with dirt and particulates pulled from the gas tank. These elements are either due to the gas tank eroding or the fuel being bad. Replacing a clogged fuel filter in a PT Cruiser is essential for keeping the fuel economy of this vehicle up to snuff.