67Dart273 said

Step back and think........The crank fires, TURNS ONE FULL TURN (and the distributor turns 1/2 turn) and DOES NOT fire on that cylinder

The crank turns ONE MORE full turn, the distributor turns an additional 1/2T and no 1 fires again

You need to see if no1 is on COMPRESSION. The timing marks come "up" and the cylinder "may or may not" be on compression. You have a 50-50 chance

HOW TO TELL?

Easy there are two ways

1...If you have either valve cover off, look at the no1 or no6 valves with the marks on TDC. Whichever set of valves is closed, that cylinder is ready to fire, and that cylinder is where you point the dist. rotor

2...Mor common, pull no1 plug and stick your finger in. Bump the starter and when you feel compression push out your finger, STOP. Now look for the marks which should be "on the way up." Set the marks NOT at TDC but rather where you want timing such as 12BTC

Drop the dist. in with rotor pointing whever the rotor will point near no1, and with the dist. case in the middle of rotation "room" (for the vacuum can)

Now retard the timing by moving the dist housing CW. Close the points if used. Turn the dist housing CCW (advanced) until the points JUST open. Do this with test light or meter

If you have breakerless, rotate until the reluctor is in the middle of the pickup coil core. "When you get good" at this you can "wiggle" the dist housing ccw--cw and make a spark wit key on. Wiggle "less and less" until you "know" where the spark is happening, that is your timing

YOU CAN CHECK TIMING on the starter with your timing light

Then START IT UP

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