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Changing my C4 Spark plugs 1.6 petrol (55 plate) |
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raybush
 
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  Member No: #15002
Joined: Aug 10 2010Location: 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 |
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Sonny
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    Member No: #2161
Joined: Feb 03 2008Location: Derby |
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 
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zozimus
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  Member No: #19089
Joined: Apr 02 2011Location: Dublin |
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?
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vytas
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Member No: #4440
Joined: Jul 08 2008Location: 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 |
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wozza
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  Member No: #2
Joined: Aug 12 2006Location: Manchester |
My bit of advice, don't use NGK's on pugs or Cits. | ||
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Commodore
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 Member No: #21107
Joined: Jul 31 2011Location: West Drayton, 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? |
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gmerry
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Member No: #11625
Joined: Nov 30 2009Location: 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 |
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wozza
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Member No: #2
Joined: Aug 12 2006Location: 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. |
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FakeConcern
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 Member No: #24127
Joined: Feb 05 2012Location: Bexhill on Sea |
Glad I read that before I fitted them in mine! | ||
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Ham
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 Member No: #69
Joined: Jan 10 2007Location: 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" |
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evafaster
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 Member No: #22510
Joined: Oct 21 2011Location: 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... | ||
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evafaster
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Member No: #22510
Joined: Oct 21 2011Location: 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! |
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Ham
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Member No: #69
Joined: Jan 10 2007Location: Derby, England |
Done around 2000 miles on NGK's had no issues at all, and most of that in traffic on short runs. | ||
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no1ice
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 Member No: #20784
Joined: Jul 14 2011Location: 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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