hi guys.
changed my spark plugs today after 12.500 miles....
keep in mind I run LPG in stead of regular gas...but what can youguys tell from mypics:
number 2, but especially number 6 have thick black stuff near the base and they all seem to have some sort of chalk of calcium deposit on it.
the color isnt very clear in the picture but they are all light brown to white-ish