To change my spark plugs, I only had to open the hood and yank the plug wires off! To change my spark plugs, I only had to open the hood and remove the coil packs and intake manifold! Then remove the cylinder heads, water pump, radiator and reprogram the ECU when I'm done! To change my spark plugs, I only had to open the hood and remove the coil packs, intake manifold, camshafts, exhaust manifold...