Having a nightmare with this oil leak. By the strategic use of bog roll I reckon its the crank speed sensor. probably the most inaccesible bit! Now I need to remove the top starter bolt to be able to get it out of the block. I cant get a ratchet on the bolt and turn it, nor can I get an extension in to clear the starter as the inlet is in the way. Anyone got any hints and tips for getting this bolt out. Surely I dont have to take the inlet off??