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#1 |
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Senior Member
Join Date: Jun 2010
Posts: 366
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My 46 Ford JUST getting for road ,most running time spent on short test runs of mile or 2 and abit of idle run time. Plugs seem to have carbon on the porcelin and a few plugs fouled now. Plugs are all tight. What causes the darkening on the porcelin? Perhaps this was caused by heat? Thanks
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