Dont know if this is the right place for these questions. I have a 1984 Honda three wheeler with some problems. Was riding and heard a backfire. Engine quit. I looked at the pulse generator, and found the advance mechanism blew apart. I replaced it but could not get it to fire. Checked compression and had 55psi. Could my piston have a hole in it? If you can answer my questions ,please e-mail me. Thanks Bruce [email protected]