The Stovebolt Site Forums The Shop Area The Electrical Bay 216 timing trouble

I have a problem and need some help.I recently tried timing my 1951 216 engine.For some reason unknown to me,the timing light will not blink hooked up to number one plug wire.Every plug wire has spark to them.I hooked the timing light up to number 2 plug wire and the timing light works.The engine has a new cap,rotor and points.I changed number one plug wire to see if that was the problem,still no luck.Do you guys and gals know what my problem could be ?