21-09-2019, 10:16 PM
At the top of p232 of the 'Companion', Jack French says 'it is a habit of the '37 head to foul its plugs when the bores are a bit ropey'. He then goes on to report that, unexpectedly, running with the sump full and long-reach soft plugs helps with this. Is this borne out by the experience of others, please? I tend to run with the sump oil below the full line, and occasionally have to swap the plugs about to keep them all looking sensibly biscuit-coloured.
Colin
Colin