How To….. Change the Fuel Filter (Petrol Engines) Astra-Sport Disclaimer - Please note that this is a guide only and Astra-Sport take NO responsibility for any damaged caused to yourself or vehicle whilst using this guide. If you are unsure how to do something leave it to the professionals. Your Insurance and warranty might be invalidated if this modification is done. Part No’s 25320277 - Fuel filter The fuel filter is located just in front of the rear nearside wheel – you should be able to get to it with the car on the ground, but jacking it up at the back and supporting on axel stands makes the job a lot easier. Step 1 Firstly, depressurise the fuel rail – somewhere near the injector rail is the depressurisation point: it looks like a big tyre valve cap (shown circled on the photo of a 2.2 engine). You may have to remove the engine cover to find it!!! Unscrew the cap carefully as the rubber seal inside can sometimes fall out and disappear into the depths of the engine!! Then depress the centre pin on the valve to release the pressure. Some petrol will come out, so use a clean absorbent cloth to catch it and prevent it going all over the engine. You will need to press the pin a few times to ensure the fuel system is fully depressurised. When done, refit the cap (making sure the rubber seal is located correctly)
Thanks to Ffoeg for the “How To”
Step 2 With the fuel system depressurised, locate the fuel filter and undo the small Torx screw (circled red) which holds the filter to the underside of the car. Then gently prise the filter from the bracket – this should then give to enough slack to get at the pipe clips. Doing one side at a time, push the filter into the pipe a bit to relieve the tension on the clips (blue square), and depress the 2 “wings” - one on each side of the clip - to release them. And the pull the filter from the pipe. Be prepared for some petrol running down your arm!! If you’ve got strong fingers you should be able to do this quite easily, but failing that use two small screw drivers to push in the wings nearest to the filter. Repeat for the other side. Step 3 Now, using a small screw driver, carefully swap the clips from the old filter to the new one – making sure you refit them the correct way round. Then simply refit the new filter to the fuel lines (making sure that it is fitted the correct way round) - it simply pushes in to the pipe until it clicks. There is a flow direction arrow on the filter to help you. Finally, refit the filter to the bracket and tighten the Torx screw. Then turn the ignition on for 5-10 seconds to re-pressurise the fuel system Job done!!
Thanks to Ffoeg for the “How To”