Black Spark Plugs

ONLY for ADVANCED technical discussion about the 240sx!
User avatar
youngun21a
Posts: 293
Joined: Mon Mar 13, 2006 7:55 am
Car: 240sx 1993 Automatic

Post

This Spark Plugs have only 1400 miles on them,they are in order 1234,As u can see the 1 spark plug look way diffrent then the rest,so I can put some new spark plugs,and drove around for about a couple of hours,came back and check them and the first one was already showing black around the tip,and the rest just a little,so I'm I runing rich or normal,I seen some on this forum,but they look the same all the way,and the one that show the most is the first one,they are all gap to .039 by FSM.Don't want to be changing plugs every 1400miles or so.


Rucca
Posts: 223
Joined: Thu Jul 19, 2007 4:10 am

Post

I dunno dude, I wouldn't really think twice about seeing these. Unless you are having some sort of problem, what makes you think they are abnormally colored?

User avatar
emerica9004
Posts: 96
Joined: Wed Apr 16, 2008 5:21 pm
Car: 1991 240 SX

Post

Rucca wrote:I dunno dude, I wouldn't really think twice about seeing these. Unless you are having some sort of problem, what makes you think they are abnormally colored?
Yeah, they look alright to me. As long as they don't have a lot of carbon build up on the ceramic and electrode.

User avatar
krazydriver
Posts: 2443
Joined: Thu Feb 08, 2007 5:24 pm
Car: 2002 civic ex, 1993 KA-T 240sx - parting it out...

Post

dude that isn't nothing. The electrodes are nice and tan. your fine.

Black isn't till you pull the plug and the ENTIRE end is covered in a heavy coat of black soot.


Return to “240SX Technical Forum”