M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: Asterian on April 16, 2013, 06:58:09 AM

Title: Spark Plug Condition
Post by: Asterian on April 16, 2013, 06:58:09 AM

Hi! Here is a photo that I took this morning when checking my spark plugs.
(http://f4.foto.rambler.ru/preview/r/668x427/516d3a0d-9d2b-5a20-aeda-69c933ff0983/PLUGS.jpg)
Cylinder 2 plug is really different from others:
(http://f1.foto.rambler.ru/preview/r/668x720/516dbe31-e001-46bb-aeda-51e44ed51518/plug.jpg)
3 month ago when I first time noticed this - cyl 2 spark plug was changed to new one.
Then I swapped cyl 1 & 2 coils to see if its a cause. As we can see - no difference.
Plug wires are fresh - was installed 10 000 km ago.
Compression - 14 approx.
When testing for spark - when plug is outside of engine - its present.
When disconnecting plug wires - engine is responding on every cylinder same way.
No fault codes.

So, why plug N2 is not looking normal?

Title: Re: Spark Plug Condition
Post by: Asterian on April 23, 2013, 03:06:54 AM

After 200 km highway trip:
(http://f2.foto.rambler.ru/preview/r/668x455/51763ecf-343b-f6c2-aeda-07389aefa561/SPARKS2.jpg)