denso s-31a spark plug results
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denso s-31a spark plug results
I am running a slightly street ported NA. engine has just about 10k miles since rebuild and 180k total. I run premix, 8oz per 14 gallon with no oil injection.
I average 17 mpg
I switched to running denso s-31a plugs and noticed a decent shift in performance.
question: how do the plugs look to you?
the trailing plugs look cold, and I plan to switch over to the hotter s-29a plugs.
the leading plugs seem to have a lot of carbon build up, maybe from excessive premix? I am running 8oz per 14 gallons which is low already, but though about running even less premix. any thoughts?
thanks!
I average 17 mpg
I switched to running denso s-31a plugs and noticed a decent shift in performance.
question: how do the plugs look to you?
the trailing plugs look cold, and I plan to switch over to the hotter s-29a plugs.
the leading plugs seem to have a lot of carbon build up, maybe from excessive premix? I am running 8oz per 14 gallons which is low already, but though about running even less premix. any thoughts?
thanks!
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