Having recently had all the plugs out whilst doing a compression test on the engine I thought worth while to check them in case they were the cause of a slight misfire I have.
All 8 x BP6ES plugs showed the same resistance – if one was a lot different to the others then I would suspect it had a fault. They all showed the same resistance of .4 ohms through the centre of the plug. I then checked the gaps were all .85mm and refitted them.
MG RV8 info news and reviews 