Plug reading...

How long, at a given throttle position, do you have to hold it there to get a proper plug reading?

Do a search for "plug chop" also look through the filebase. There have been numerous threads on this topic. That should get you going in the right direction.

TeK9iNe wrote:

How long, at a given throttle position, do you have to hold it there to get a proper plug reading?

WOT for 1/4 mile should be sufficient. Cut the kill switch and pull in the clutch.
Start with fresh plugs and ensure the engine is up to temperature.

refer to the following: www.empirenet.com/pkelley2/sparkplugreading.html

This method of plug reading should also work for mixture readings at part throttle but heat range should be tested at WOT.

Thx man.