On a 70 GMC 307 had one plug that keept getting oil on outside like that, never could get it to stop. Valve seal replaced by local garage a couple of times. The plug was always oil fouled as well as the oil setting around base of plug. Other 7 plugs always OK. Garage never figured out what to do about the oil fouling and then leaking past the plug. Plugs had to be changed constantly due to the oil fouling. Ido not know if those plugs were for the gasket or not as garage always did the work. But some way that oil did get past the plug threads as the inner end of plug was always oil fould. If from outside leak would noy have been doing it to the electrode end of plug so someway it did get past the plug threads. Had to have things changed dozens of times over the years the truck was in service.
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Today's Featured Article - Product Review: JB Weld - by Staff. JB Weld is basically an epoxy glue that does an exceptionally good job of bonding to cast iron and steel along with several other materials. As I mentioned, it is so common that I have yet to buy a tractor that did not have JB Weld used somewhere. It is sometimes used so well you can't tell its there and other times used as a sloppy quick fix. Finding where and how it can be used correctly is key to whether you are using it as an "inelegant hack" or an integral solution to difficult and expens
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