i didnt pull any fuse. i took all the spark plugs out at the same time. you have to disconnect your distributor (theres 2 grey clips and its the one on the left -its a bitch to get off for some reason) when you have the compression tester in your first cylinder, have someone reading it while you have the clutch in, and the gas pedal all the way down, and crank it 4-5 times. its hard to explain exactly how/when to read it, but when youre doing it, it makes a lot more sense. have the same person reading the whole time so that you have consistant readings. and you also might want to do each cylinder twice. also, if one of the cylinders has a lot less compression than the rest, put a drop of oil in it (a wet test) and then test it again, this will tell you if its just a piston ring problem.