can someone tell me how to replace these do you have to pull the heads off
and other then watching it doesn,t over heat can i safely run it with them disconnected until i get new ones.
thanks again chris yes i took the the boat out and ran it with them unplugged and it was fine plug them back in and it drops back down to 2200 rpms so i guess that means they are screwed up i put my hand on the block it was not hot at all