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Introduction

Tutorial made on Citroën C5 phase 1 1.6 hdi from 2006

  1. To make loosening the spark plugs easier, it is best to bring the engine up to operating temperature. Location of the hoses to be removed, remove the 10 screw. Remove the hose that carries air to the air filter housing (clipped only)
    • To make loosening the spark plugs easier, it is best to bring the engine up to operating temperature.

    • Location of the hoses to be removed, remove the 10 screw.

    • Remove the hose that carries air to the air filter housing (clipped only)

  2. Loosen the flow meter clamp Unscrew the turbo hose clamp Be careful with the breather clips; spread the 2 clips well when removing the turbo intake hose.
    • Loosen the flow meter clamp

    • Unscrew the turbo hose clamp

    • Be careful with the breather clips; spread the 2 clips well when removing the turbo intake hose.

  3. Turbo air intake hose, removed Protect the turbo with a cloth
    • Turbo air intake hose, removed

    • Protect the turbo with a cloth

  4. Remove the 3 screws with an 8 mm socket: (small tip when replacing this 3rd screw, put a piece of paper in the socket and fit the head of the screw forcefully into the socket then screw) Remove the flow meter without disconnecting it, then place it to the side
    • Remove the 3 screws with an 8 mm socket: (small tip when replacing this 3rd screw, put a piece of paper in the socket and fit the head of the screw forcefully into the socket then screw)

    • Remove the flow meter without disconnecting it, then place it to the side

  5. Unscrew the 2 screws with a flat screwdriver , then remove the air filter cover. Finally, remove the air filter housing mounted on the silencer block Remove the air filter cover + housing
    • Unscrew the 2 screws with a flat screwdriver , then remove the air filter cover. Finally, remove the air filter housing mounted on the silencer block

    • Remove the air filter cover + housing

  6. Disassembly of the EGR valve pipe (located on the upper right side of the engine) by unscrewing the 2 torx screws (tx 30) and unclip the clamp located at the other end of the pipe Please note that for reassembly you will need a new collar. EGR valve tubing removed.
    • Disassembly of the EGR valve pipe (located on the upper right side of the engine) by unscrewing the 2 torx screws (tx 30) and unclip the clamp located at the other end of the pipe

    • Please note that for reassembly you will need a new collar.

    • EGR valve tubing removed.

  7. The glow plugs are behind the engine. To work properly, take an old blanket, put it on the engine and lie down on it; you will see the plugs better and it is much easier to loosen them, especially the nut that holds the power terminal. Remove the 8 nut from each spark plug with an 8 socket, lift the spark plug power terminal. Then, with the long 8 socket, remove the 4 glow plugs. If you feel any hard spots, screw them back in and out as if you were rethreading them while cleaning them. Be careful, do not force them, otherwise you risk breaking the spark plug. Compare old spark plugs with new ones
    • The glow plugs are behind the engine. To work properly, take an old blanket, put it on the engine and lie down on it; you will see the plugs better and it is much easier to loosen them, especially the nut that holds the power terminal.

    • Remove the 8 nut from each spark plug with an 8 socket, lift the spark plug power terminal. Then, with the long 8 socket, remove the 4 glow plugs. If you feel any hard spots, screw them back in and out as if you were rethreading them while cleaning them. Be careful, do not force them, otherwise you risk breaking the spark plug.

    • Compare old spark plugs with new ones

    • To reassemble the spark plugs, lubricate the threads with copper grease only. Once the 4 spark plugs are tightened, reassemble the power terminals

    • Reassemble in reverse order what was removed.

Finish Line

4 other people completed this guide.

d-dany

Member since: 07/20/2015

2,298 Reputation

12 Guides authored

3 Comments

Thanks Dany! It takes time to make a tutorial. I like to see before taking it apart. I'll start this weekend

Thanks again.

armand krebs - Reply

Hello Michel;

It was nothing

Same 2 out of 4 had trouble coming.

d-dany - Reply

Hello Dany

Very good tutorial, thank you.

On the other hand, unscrewing the spark plugs is really tricky. You really have to be careful.

On two spark plugs, I thought I couldn't do it. Screwing, unscrewing with a little W40 took me a lot of time.

But with patience and calm, everything went well.

Thanks again.

Michel CHARBONEL - Reply

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