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possible burn valve seals if hetters wore welded on engin

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โˆ™ 2011-09-13 22:57:25
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Q: What could cause an otherwise good running new engine with only 400 miles to start fouling all 8 plugs and smoke light grey or blue after having the holes in the header collectors welded?
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Your sled keeps fouling plugs but everything in the ignition checks out what else could be wrong?

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