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Haven't got a photo, but what I can tell you is that when I took out the spark plug socket from all three plug recesses, the bottom inch of the socket was covered in oil.

Hi, I think I know where you are coming from, but on this 3 cylinder engine the plugs are offset at an angle in relation to the block. They don't come through the rocker cover.

Hi, 6V BMD engine. I changed the sparkplugs and found all three plugholes had oil in them before I removed the plugs. I have recently smelt oil when engine was hot but could not trace it till now as there was never any drips on the driveway. There doesn't appear to be oil coming from the rocker cove...