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C4 - DS4 Owners :: Forums :: Coupe and Hatch Pre 2011 cars :: C4 Coupe Hatch and General Questions
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Changing my C4 Spark plugs 1.6 petrol (55 plate)
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Author Post
raybush   
Tue Mar 29 2011, 07:17am
Member No: #15002
Joined: Aug 10 2010
Location: Essex
 I'm fairly new to this car and didn't want to get it wrong. I want to change the spark plugs and got as far as the coil pack and thought 'what do i do now'? Do I need to un-plug the coil pack and then lift it off? Any help would be great .

I know it's just a basic thing, but not knowing the car that well I don't want to mess-it-up.

Regards
Sonny   
Tue Mar 29 2011, 03:23pm
Unplug the coil pack (the connector is on the right) and pull it off, and remove the plugs its easy... be careful not to drop it as there not cheap
zozimus   
Sat Apr 02 2011, 01:10pm
I tried changing mine today - but there was an inlet (or outlet ) pipe in the way of plug number 3. So now I've three nice new NGKs and a single old Bosch. I didn't want to force off the pipe in case I broke its clip. Anyone got any advice? Is it easy to unclip that inlet/outlet pipe?
vytas   
Fri Mar 16 2012, 02:58am
Member No: #4440
Joined: Jul 08 2008
Location: lithuania
 Hello:

please help me with the wrench tool size for changing spark plugs.

Spark plugs: BOSCH Yttrium Super Plus Spark Plug

Manufacturer : CITROEN
Model : C4 1.6i
Engine : TU5JP4
Power Output (Kw) : 80
wozza   
Fri Mar 16 2012, 06:04am

Member No: #2
Joined: Aug 12 2006
Location: Manchester
 My bit of advice, don't use NGK's on pugs or Cits.
Commodore   
Fri Mar 16 2012, 07:07am
Member No: #21107
Joined: Jul 31 2011
Location: Ruislip, Middlesex
Wozza wrote ...

My bit of advice, don't use NGK's on pugs or Cits.

Really - why so, have you had issues? Have always used NGK's for as long as I can remember on my petrol cars. Always thought they were good?
gmerry   
Fri Mar 16 2012, 07:46am
Member No: #11625
Joined: Nov 30 2009
Location: aberdeen
 Vytas, why don't you buy the new plugs and fit the plug socket to the plugs.

Otherwise a bit of googling will get you the answer eg - Click Here - = 16mm hex 14mm thread
wozza   
Fri Mar 16 2012, 01:34pm

Member No: #2
Joined: Aug 12 2006
Location: Manchester
Commodore wrote ...

Wozza wrote ...

My bit of advice, don't use NGK's on pugs or Cits.

Really - why so, have you had issues? Have always used NGK's for as long as I can remember on my petrol cars. Always thought they were good?


Same, put some in the 180 and it ran badly. Googling for causes and NGK'S came up as a no no in them according to many forums. Was told to stick to Bosch. Something to do with phase correction or something. Google it, will get quite a lot of posts on various forums about it.
FakeConcern   
Fri Mar 16 2012, 02:00pm
Member No: #24127
Joined: Feb 05 2012
Location: Bexhill on Sea
 Glad I read that before I fitted them in mine!
Ham   
Fri Mar 16 2012, 02:09pm

Member No: #69
Joined: Jan 10 2007
Location: Derby, England
Wozza wrote ...

My bit of advice, don't use NGK's on pugs or Cits.

Hmm, never had problems with NGK on Citroen's Tom, always noticed they were better than Bosch or Champion.
Champion ones were totally rubbish in the TU3(?) engine in the AX GT, having said though not tried the in the "S"
evafaster   
Sun Oct 14 2012, 01:48pm
Member No: #22510
Joined: Oct 21 2011
Location: Newcastle Upon Tyne
 Had NGK in for 4000 miles taking out the BOSCH ones at 28000miles. Engine always since fitting takes longer to warm and today developed a stuttering throughout the rev range, most prevalent at~4000 revs. Order BOSCH FR8SE0 plugs tonight, will fit later in the week, will report back next week...
evafaster   
Sat Oct 20 2012, 12:59pm
Member No: #22510
Joined: Oct 21 2011
Location: Newcastle Upon Tyne
 Well new BOSCH FR8SE0 fitted today, instant improvement, much smoother over entire range. Hopefully will continue!

NGK ones had a lot of carbon on the ceramic for just 4000 miles usage.

Noticed the BOSCH ones I fitted today have more ceramic tip protuding than the NGK ones. So if anyone needs any NGK's, slightly used free to a good home!
Ham   
Sun Oct 21 2012, 01:10pm

Member No: #69
Joined: Jan 10 2007
Location: Derby, England
 Done around 2000 miles on NGK's had no issues at all, and most of that in traffic on short runs.
no1ice   
Sun Dec 09 2012, 01:30pm
Member No: #20784
Joined: Jul 14 2011
Location: Bromley, Kent
 Hi everyone,

Quick question. Was nosing around in the engine bay and decided to have a look at the spark plugs. Do the following look normal? Approx 7months old and about 10,000 miles driven.


 

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