flyrotary@lancaironline.net Mailing List Archive

Yup, I suspect SAG. I go through plugs very quickly.. like 25hrs. No cleaning will help as the electrode is worn out. You can milk them to 100 hrs but its not really worth it. SAG gets really bad by 75 hrs. The platinum onea last an extra hour or two. Have not tried the iridium. Always change plugs before a long trip. Also, they come out much easier after only 25 or so hours.

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David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

On Mon, Sep 3, 2012 at 8:46 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

Has anyone ever noticed a hiccup associated with sparkplug SAG? I have a hiccup that is occurring at random intervals from seconds to several minutes. Sometimes it is pretty mild and sometimes it shakes the plane! I also seem to be down in power and I am beginning to suspect plug SAG. I have 38 hours with the Iridium plugs plus a lot of time over the years of running the engine before flight. I had a couple instances of flooding which required that I take the plugs out and sandblast them to get them to fire. Just drying them out didn’t work.

Thoughts??

Bill B