I just changed the plugs on mine. What I thought would be a 30 minute job turned into 2 hours, but I am a novice at this. A few tips, careful with the radiator when you pull it off, it´s easy to do but be sure not to bang it around. Once you have the plugs loose, use a piece of fuel line to slip over the top and pull them out, the best trick I learned. Be patient and I hope you don´t have huge hands because access is verrrry limited! Good luck...