Italiancowboy
Active Member
So during annual we found the exterior of the barrels of the spark plugs on bottom cylinders 1,3,5 (O-540) to be rusty (see photo)
But all other 9 plugs are fine (see photo)
No issues with the plug, normal wear, firing fine.
Engine runs fine
Anyone have a guess on what’s happening?
Why only plugs on lower cylinders on one side ?
Besides ugly, I worry that the corrosion can eventually make them hard to remove.
But all other 9 plugs are fine (see photo)
No issues with the plug, normal wear, firing fine.
Engine runs fine
Anyone have a guess on what’s happening?
Why only plugs on lower cylinders on one side ?
Besides ugly, I worry that the corrosion can eventually make them hard to remove.
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