spark plug problem

[tylex]

Hi guys!
Have a problem on the third and fifth cylinder.Only these two plugs looks like shit.Kompression on these cylinders is okay(11,8 and 12.5bar).Timing is set.Distributorbase,rotor and cables are new.Tried ngk and champion plugs.Always the same problem!Datamaster file shows knock.Any idea?
Here is a picture of one plug one both sides:
http://s7.directupload.net/file/d/1535/9ek67sj6_jpg.htm
http://s5.directupload.net/file/d/1535/2tkiaeus_jpg.htm

 

[MikeK]

Re: spark plug problem

Mine looked like that on my 3 cylinder cause I had a broken valve spring and the valve seal was trash. Does your smoke at all? Mine smoked at an idle after it has sat for 3-5 minutes.

 

[tylex]

Re: spark plug problem

No,it dont smokes.Maybe the problem comes from the injektors:roll: