Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - lean mixture?
Thread: lean mixture?
View Single Post
  #18 (permalink)  
Old 01-20-2013, 12:19 PM
cobalt327's Avatar
cobalt327 cobalt327 is offline
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Posts: 5,031
Wiki Edits: 1616

Thanks: 128
Thanked 616 Times in 565 Posts
Originally Posted by jeepers creepers View Post
Plugs look all like that, they have a white spot on electrode and ceramic surrounded by a dark layer down below.
What do you think about them? Mixture is ok but too hot plugs?
Any help will be greatly appreciated.
New plugs needed, it's all but impossible to read a plug that is old or has been idled after a WOT run. Your plugs were hot at some point, though. Besides the other suggestions, be sure the heat range isn't too hot. Be sure the timing is all in at or before 3000 rpm and that the timing advance curve is set up correctly.

Reading plugs
Reply With Quote