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Introduction

This tutorial shows how to change spark plugs on Citroen C1 phase 2 1.0i 12v.

Changing the spark plugs is not very difficult. Only the disassembly and reassembly of the air box is a little tricky since you work blindly to dislodge it from the throttle body.

  1. 
The air box is held in place by:
    • The air box is held in place by:

    • 4 clips at the air filter level

    • 1 collar at the butterfly housing

    • 1 collar at the oil breather

    • 1 rubber lug

  2. 
unclip the 4 clips around the air filter

pinch the clamps at the throttle body and breather then lift the air box

and take it out
    • unclip the 4 clips around the air filter

    • pinch the clamps at the throttle body and breather then lift the air box

    • and take it out

  3. 
undo the ignition coil retaining screw, 10mm wrench

take out the reel and put it on hold

Do not force the connector, the coil is still connected.
    • undo the ignition coil retaining screw, 10mm wrench

    • take out the reel and put it on hold

    • Do not force the connector, the coil is still connected.

    • the candle is now accessible

  4. 
Use a blower to clean the spark plug well

A can of computer air can do the trick.

unscrew the spark plug using a 14mm long socket and a ratchet wrench
    • Use a blower to clean the spark plug well

    • A can of computer air can do the trick.

    • unscrew the spark plug using a 14mm long socket and a ratchet wrench

    • I use a magnetic socket which is very practical for this type of operation.

    • remove the spark plug

  5. 
compare the candles (shape, length, diameter and especially references)

The packaging of the new spark plug informs us about the tightening torque: 23 Nm
    • compare the candles (shape, length, diameter and especially references)

    • The packaging of the new spark plug informs us about the tightening torque: 23 Nm

  6. 
present the candle

hand tighten as much as possible

finish tightening with the torque wrench, torque of 23 Nm
    • present the candle

    • hand tighten as much as possible

    • finish tightening with the torque wrench, torque of 23 Nm

  7. 
grab the reel

and put it back in place

A thin layer of dielectric grease can be applied where the spark plug is inserted.
    • grab the reel

    • and put it back in place

    • A thin layer of dielectric grease can be applied where the spark plug is inserted.

    • screw in the fixing screw, 10mm key

  8. 
proceed in the same way for the other 2 candles
    • proceed in the same way for the other 2 candles

  9. 
Reassemble the air box in reverse order of disassembly.
    • Reassemble the air box in reverse order of disassembly.

    • be careful :

    • to the air box clips

    • to the butterfly housing collar

    • on the breather collar

    • with rubber lug

  10. 
make sure everything is in place
    • make sure everything is in place

Finish Line

One other person completed this guide.

a_bosc2000

Member since: 11/3/19

28,441 Reputation

147 Guides authored

4 Comments

No need to specify that the C1 of this tutorial is a phase 2. First, the tutorial is filed under the C1 phase 2 heading, secondly we see from the first image that it is a C1 phase 2. No pretension story, you were wrong and I was right. It's as simple as that.

There is no candle tutorial for C1 phase 1, I invite you to make one rather than coming to troll my page.

a_bosc2000 - Resolved on Release Reply

ok but it is not specified that these are the latest models, mine being from 2013 and from 2005 to 2014; these are 16 sockets and when I enter my registration number for spark plugs; there are 14 and 16, according to the number that I entered it should therefore, I think, only appear 16 and the C1 or 107 or aygo up to 2014 are still for many of them in circulation; your tutorial is good but it does not specify the year and the configuration differs somewhat with the older models; I find you very sensitive, the slightest remark makes your hair stand on end; a bit pretentious perhaps…

neaimupv - Resolved on Release Reply

no 16 socket; I am the owner of a C1; to err is human, your contribution is appreciated but there is this error and that you

Growing up means recognizing it.

neaimupv - Resolved on Release Reply

It is a 16mm socket and not a 14mm one that you have to use.

neaimupv - Resolved on Release Reply

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