Oil Pressure Switch 1968 Riley Elf MK3 Aug 13, 2021 8:23:56 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by sjs on Aug 13, 2021 8:23:56 GMT I have faulty oil pressure switch which appears to be screwed into the top the oil filter cover. I cannot see how to remove this as there is no nut to unscrew the switch from the top. Has anyone replaced one of these ? Any help much appreciated.