Show SOLUTION DISSOLVES CARBON ON PLUGS Spark plug porcelains may be freed of oil carbonaceous or other foreign matter by soaking them in a OI a solution n of cr carbon disulphide obtainable l at any drug g store This solution dissolves the carbon and leaves eaves th the porcelain bright Of course this treatment applies particularly particularly par par- to the he type of porcelain which is removable from the shell of the plug but the same method of cleaning can be used even If the plug is of the piece one type Just soak the whole plug shell and all It wont won't do any harm andIs and Is one reasonably effective way of at attacking attacking attacking at- at tacking that carbon which resists the efforts to dig it t out with a knife or other tool |