It varies, but probably 20-30 hours. I had been changing them just to improve the idle, but Tracy's EC2 mod has cured that particular symptom, so we'll see how long they go now.
Bill Eslick
On 6/10/07, Bob White <rlwhite@comcast.net> wrote:
Bill,
How often do you change your plugs? Often enough to avoid SAG?
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