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SPARK PLUG ISSUE.


Dicky

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Did a service today and removed the spark plugs to clean and check gaps. I noticed that cylinder 4 plug looked quite dirty and the outside electrode was partially burnt away (see pic) although all other plugs looked fine (clean and fawn coloured). Then I recalled I had the same issue in 2017 when I did the plugs, although the outside electrode, while worn, wasn’t quite as burnt away.

Has anyone got any ideas what could cause this, injector, coil pack, other.
 

DB0116B7-5221-4330-9F24-33CE9E5473C8.jpeg

 

 

 

E4628A28-B6F4-440E-8474-FA63EAC42E9B.jpeg

Edited by Dicky
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  • 2 weeks later...

I can't remember which cylinder 4 is, but if it's one at the back (closest to the firewall) you might have the old leaky rocker cover gasket problem... I can't remember what mine looked like when I had this...

 

Was there any oil on the top of the sparkplug at all? 

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