So I am in the middle of my timing belt/water pump replacement and I can't get the crank pulley bolt off. I've got most of the dis-assembly complete but have spent the last 2.5hrs trying to break the crank bolt free. I've tried a 1/2in drive impact and a breaker bar with a strap wrench to use as counter leverage, and no luck. I've heard of bracing a breaker bar under the frame and "bumping" the starter to break the bolt free. Anyone tried this? It makes me a little nervous doing this with the whole front of the engine disassembled. I'm assuming I should re-connect the timing sensor, and disconnect the ignition coils (8)? Any other methods or special tools for removing the bolt? Any advice is much appreciated!