: Astra H: 1.9 CDTi: HOW TO: Change the fuel filter



Dice 3
10-03-2010, 17:54
I thought i might as well do a how to while i was carrying out this job...

First off, this is the part number of the filter and it was 18 with trade discount...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7515.jpg

Now, you need to make sure you have some rag or paper towelling to hand to mop up any spillage as you will incur some whilst removing the old filter...

So, press the tab down on the electrical multiplug connection on the top of the filter housing and withdraw the multiplug...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7493.jpg

Next, use a flat bladed screwdriver and depress the blue plastic retaining clips inwards to release the fuel pipes, there is one either side as shown...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7494.jpg
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7495.jpg

Do the same wth the second fuel pipe, making sure to catch any spillage where possible...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7497.jpg
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7496.jpg

Push both fuel pipes back out of the way as shown here to enable easier access to the filter housing itself...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7498.jpg

I found the easiest way to undo the screw cap (anti-clockwise looking at the engine bay) on the filter housing was to take the screwdriver and gently tap against the ridges around the cap to loosen it off as they can be quite stubborn...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7499.jpg

Next you need to push some of the loom wiring out of the way to make cap extraction a bit less fiddly, you will need to cut the cable tie that holds it against the panel behind the fuel filter housing so be careful whilst using cutters or a knife so that you don't nick or cut any wiring...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7501.jpg

Once you've done this, remove the cap and screw ring (two seperate parts) from the filter housing but bear in mind that you will lose a small amount of fuel at this point, the filter is attached to the underside of the cap...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7502.jpg

Its a pull and twist job to get the filter off but hold it upright and pull down on the filter as there will still be fuel inside the filter itself, you'll end up with something looking like this...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7491.jpg

Fit the new filter to the cap and twist to lock it...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7503.jpg

The new rubber sealing ring supplied in the box will now be fitted to the filter housing in the engine bay, this is the o ring you should get...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7505.jpg

Now place this over the top of the filter housing making sure it sits flat on the surface flange...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7506.jpg

It should look like this when fitted in place...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7507.jpg

Now replace the cap and tighten the screw ring CAREFULLY as to avoid cross threading it which CAN happen if you're not careful, use the screwdriver to tighten the ring once its hand tight (Clockwise looking at the engine bay)
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7510.jpg

Now replace the connector and fuel pipes back into their respective places...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7513.jpg

Now clean the filter housing with a rag or some paper towelling to mop up any excess fuel...
http://i692.photobucket.com/albums/vv282/chrisgair/Changing%20Fuel%20Filter/DSCF7514.jpg

Once this is done, switch on your ignition and you'll hear the fuel pump pulling fuel through the system and refilling the filter housing so the pump may change in pitch a few times and you might also hear some bubbling noises too but this is normal...

Check under the bonnet for any leaks now that the system is re-pressurised and providing you've refitted everything correctly there should be no worries here...

Now you're ready to start the engine to bring the fuel system upto operating pressure, do one final check for any leaks and you're good to go... :thumbs:

Hope this is of some help to those of you that like to do your own servicing :thumbs: