Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Help reading spark plugs
View Single Post
  #23 (permalink)  
Old 01-16-2013, 09:35 PM
steeny steeny is offline
Registered User
Last photo:
Join Date: Jan 2013
Posts: 533
Wiki Edits: 0

Thanks: 36
Thanked 143 Times in 118 Posts
There is an excellent article titled "Tuning an Engine by the Spark Plug.
by Brian Odom", which states in part:

"When tuning a performance engine the spark plug is a important tuning tool. Being that there are many different tuning techniques, I will keep this article about the basics of spark plug reading on a Quarter-Mile Drag Strip (or wide-open-throttle tuning).
When tuning by the spark plug, you must always use a NEW plug to get an accurate reading.
To get a clean plug reading the engine should be shut down after the run and towed back to the pits.
Any running of the engine after that will skew the plug reading.
When tuning by the spark plug, you must always remember there are two major variables at play (air fuel ratio and ignition timing).
To make it easier to determine your on the right track when tuning, make small incremental changes and only 1 or 2 changes at a time."

To read more, go to

Check it out, some good info here.

Last edited by 68NovaSS; 01-17-2013 at 12:33 AM. Reason: Cut and paste violation, see board guidelines
Reply With Quote