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I just read with intense interest another thread about one member soliciting opinions from others about their analysis of a couple of his spark plugs. IMHO the two (?) plugs he pictured appeared quite normal to me. But during the course of that thread one member mentions (screen name slips my memory at the moment) injecting Seafoam directly into the vacuum tube on the intake. Then he states that after this treatment replacing the plugs is highly recommended. That leads me to my question. When treating suspected gunked up carbs after a scoot has set dormant for a long period of time, in other words using a high concentration of Seafoam, can this treatment be the cause of permanent sparkplug damage? I have read here that some may dump as much as a full can and even more into a full tank of gas. That seems like quite a lot to me. Others have even written they've applied 100% Seafoam into the carbs while running. I am just curious if an overuse or high concentration can be cause for damaging sparkplugs. I've used the stuff only once on my current VR because the carbs were in fact clogged somewhere and the Seafoam did absolutely nothing. I therefore removed the carb bank, dissassembled all four and had them vatted; reassembled and, whoalah; perfect. But I did not drain and replace the gas that had the high concentration of Seafoam. But I still get a slight miss, pop, cough (however we all may describe these things) at idle. I replaced all the wires and caps and the doggone thing still pops, misses, etc at idle. The carbs are a synced as close as I can get them with my Carbtune. I am now wondering if the application of Seafoam may have permanently fouled or damaged one of the plugs. Any thoughts? Oh yeah, no vacuum leaks anywhere; checked till I was blue in the face. Thanks Herb
