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Old 10-03-2003, 11:40 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,114
In my case the plugs look like I installed them last week. They all look the same - clean. After further inconclusive testing, I think heard a tick-tick-tick from the area of the one bad plug suggesting a bad insulator or cracked ceramic case or something like that.

I haven't sworn off Bosch Supers, but I have to wait until I have to put in a worthwhile internet order since I can't find a local shop that stocks H9DCOs. 'til then it's cheapo Autolite 104s. But there might not be a 'til then since I'll be selling the 300SE shortly.

91 300SE
87 300SDL
83 300SD
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