Jump to content


Photo
- - - - -

Reading A Spark Plug


  • Please log in to reply
3 replies to this topic

#1 croc7

croc7

    Mini Mad

  • TMF+ Member
  • PipPipPipPip
  • 128 posts
  • Location: Tacoma, Washington

Posted 05 June 2019 - 04:35 AM

What part of the plug is read? Is it the porcelain/ceramic insulator or the curved electrode? And what should I be looking for using 92 octane (US) gas with 15% of that stinking ethanol?

#2 Mini ManannĂ¡n

Mini ManannĂ¡n

    Well I'll be buggered if I can find it

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPip
  • 2,477 posts
  • Location: Middle of the Irish Sea
  • Local Club: man Estate

Posted 05 June 2019 - 05:33 AM

Have a look here: http://www.ngksparkp...al-spark-plugs/



#3 Dusky

Dusky

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 4,924 posts
  • Location: Belgium

Posted 05 June 2019 - 10:20 AM

With modern fuels you want a nice dark grey colour on the plug electrode. Not brown like it used to be.

#4 croc7

croc7

    Mini Mad

  • TMF+ Member
  • PipPipPipPip
  • 128 posts
  • Location: Tacoma, Washington

Posted 05 June 2019 - 06:45 PM

Thanks for the information.  So based on the link to NGK and the response from Dusky, the color of the ground electrode is the part of the plug to be read and not necessarily the porcelain nose of the insulator?






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

Mini Spares