The second pump is a pusher which pressurises the fuel as it shoves it to the engine. The two types of pump are different -lifters and pushers. As somebody has mentioned, it's probably low fuel pressure that's causing your problems. You could try fitting a second fuel pump in-line. Hi Tried to change the fuel filter on my mk1 55sx but could remove the retainer clips on the fuel hoses!!! Ne one know how they are removed so i can get Lastly, a clogged fuel filter can contribute to the bad fuel pump symptoms you may experience. A fuel filter’s primary function is to remove dirt, debris, and contaminants from the fuel before it reaches your engine. A clogged filter can: Restrict fuel flow to your engine, causing a loss of power; Contribute to engine misfires and rough idling 3-Where is the Fiat Grande Punto fuel filter located . At present and due to environmental concerns, manufacturers are developing various solutions in order to try to build less polluting vehicles. For example this is why you can find the fuel filter in different locations depending on the year of manufacture. Technical. Fuel Filter - Punto EVO 1.4 8v Petrol (2010) canningjames. Mar 29, 2016. fuel filter fuel syste servicing. mrapriliafalco said: I am sure I read somewhere there is not one to change on the Stilos. Correct. Probabaly as a cost-cutting measure, petrol Stilos don't have a fuel filter. If you could sort out a mounting point somewhere near the tank, I suspect you could probably retro-fit one from another model such as a Punto. Nov 19, 2007. #4. there two bleed screws-one on top and one on bottom of filter --the bottom one should be used to draw off any water that may be in the system --open top screw then open one at bottom that will drain any fuel and water in filter, as already reported the system is self priming but there may be some air in system so loosen the 4C4BTn.