what you say "made a difference", what sort of difference.
idle
cold start
power
knock
What gap? What plugs did you pull out, and how old were they, and what were they gapped at?
What did you set the gap of the new ones at? what heat range were they?
Bob
idle
cold start
power
knock
What gap? What plugs did you pull out, and how old were they, and what were they gapped at?
What did you set the gap of the new ones at? what heat range were they?
Bob