spark plug red in colour
Moderator: RichardW
spark plug red in colour
my c3 1.4 8v ,it has a very small misfire at low revs ,so i have just changed the plugs ,they where ngk ,only done 2000miles ,but the white ceramic around the electrode was red and the whole end of the plugs were redish in colour to ,my driving is mostly on m/way at around 65mph ,but i only get 37 mpg ? .it seems very low ,Citroen say 44mpg extra urban , any ideas ????
Apart from being red do the plugs look very clean, the bottem of the threaded body that is exposed to the combustion chamber and the earth electrode too ?
Now using '00 Xantia LX HDI, pov spec
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
Sounds like octane enhanced fuel can have this effect which doesn't have any
serious effect on running with the plugs being OK to use...
Interesting pics here:
http://www.gtr.co.uk/forum/139824-red-b ... plugs.html
http://www.camaros.net/forums/showthread.php?p=1245147
serious effect on running with the plugs being OK to use...
Interesting pics here:
http://www.gtr.co.uk/forum/139824-red-b ... plugs.html
http://www.camaros.net/forums/showthread.php?p=1245147
- VertVega
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Thanks for the links. I checked those pics, very interesting .andmcit wrote:... Interesting pics here:
http://www.gtr.co.uk/forum/139824-red-b ... plugs.html
http://www.camaros.net/forums/showthread.php?p=1245147
I made a Google search also and found several other cases (mostly car forums from US).
Good to know this because "classical" Spark Plug Symptoms with pictures don't include the red-brown case yet
C5 II 2.0i 16V - 2005 - Estate - 103KW - EW10A - Petrol - Manual
mine are the same as the gtr link ,i dont run any additives in the fuel ,the car has done 76000 miles ,i drive 24 miles to work and 22 of them are done on a main road at around 65mph , would you believe it i am a psv fitter ,and no one in our workshop has seen plugs this colour ,but we only do diesels
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- Posts: 1626
- Joined: 26 Feb 2004, 23:21
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- My Cars: C5 V6 Mk1 assainated by wife
Renault Kangoo 1.6 auto, tarted up and remapped
Still missing the Xantia V6
Not missing the AX - Contact:
FWIW I run both my vehicles on super unleaded and the plugs always come out red like the pics. Whether they would be the same on regular fuel I couldn't say.
It infuriates me to be wrong when I know I'm right
Lexia ponce
http://perception.dyndns.biz/~avengineering/index.htm
Lexia ponce
http://perception.dyndns.biz/~avengineering/index.htm