Jump to content

Spark plug White ceramic moving up and down in metal shell


Jackham

Recommended Posts

99 RON is like 93 AKI? Octane booster is usually trash. And your compression is probably around 180 psi? I would keep timing stock and run a wide squish.
Replace the plug and suspect deto if it happens again or your plugs keep backing out. You could try richening your main a bit to lessen the chances of deto.
Other option is to put some 23cc domes in.


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...