C5 2008> X7 2.2Hdi 173Bhp Fuel Filter Change

[djdaz116]

Hi all

 

I am about to change the fuel filter. It is the sealed unit filter on the front of the engine. It looks straight foward, but the straight foward jobs can end up being the worse.

Can someone just talk me through what I need to in order. The removing is not the issue, it's the refitting and bleeding etc so it starts ok after.

 

Thanks guys

 

Darren

[paul.h]

The following is a modified Citroen procedure but it is the same as on our 2007 C5 2.2 hdi and some of the things were not needed so are noted. I used a filter from a Citroen dealer which included plugs for the pipes to keep dirt out. Take a photo before starting in case the pipes get mixed up. Use some tissues to catch any diesel drips.

 

2. Removing

ESSENTIAL : Respect the safety and cleanliness recommendations that are specific to high pressure diesel injection (HDi) engines.

Disconnect the battery. (did not bother)

Remove :

• The protective panel under the engine (not needed but I did an oil change at the same time so it was removed with difficulty since fasteners were rusted/seized and some new ones were needed as well as some small nuts and bolts and large washers)
• The engine cover
• The air filter air inlet pipe

Protect the alternator. (plastic bag will do so any spilt diesel does not get in it)

 

Place a draining tray under the engine. (I put a cup at the end of the clear drain hose but found the hose was not pushed on to the filter drain point so diesel was spilt. Fully draining the filter can be left until it is removed from the car)

Open the bleed screw (5 mm allen key) on top of the filter. (at the back right side when looking at the filter from the front, so the filter will drain out of the bottom)

Clean the filter unions of the pipes.

Unplug the top electrical connector and a bottom one if fitted (water detection, this was not on our C5 but the connector was there):

 

Unclip the electrical harness (at the left side).

Disconnect the 4 pipes (by pushing down on the coloured clips and then the pipes will easily pull off).

CAUTION : Plug the fuel pipes and the pipes on the fuel filter ; (Using the plugs supplied with the new filter).

Remove the fuel filter metal protection shield (used a 10 mm socket with a piece of cardboard against the radiator so it was not damaged when the shield was resting against it).

Close the bleed screw.

 

 

Remove :

• The 3 fuel filter fixing bolts (8 mm allen key)
• The fuel filter (this was put in a funnel in an old oil container to catch the diesel draining out)

3. Refitting

CAUTION : Open the sachet containing the new fuel filter just before fitting.

Refit :

• The fuel filter 
• The 3 fuel filter fixing bolts (9Nm)
• The fuel filter protector shield

Reclip the electrical harness.

Couple up pipes.

Reconnect the electrical connectors.

Remove the alternator cover, clean up any diesel spills.

 

4. Bleeding the supply circuit

Citroen's procedure is to use degassing pipes but all I did was use the hand priming bulb a lot to get out any air and the car started first time. Then check for any leaks.

 

6. Refitting (continued)

Refit :

• The air filter air inlet pipe
• The engine cover
• The protective panel under the engine (if removed)