Im stumped, It's missing and ticking.

On both of the 318's ive changed fuel pumps on (68,73), there is no pump pushrod/eccentric. They both worked great. Maybe the 340,360's do, as i havent change the one on my 340 cuda yet. My 440-3 in my motorhome did. As for the problem, i would say check the valvetrain as well, but the part of the description that gave me doubts in my mind was that it was "cutting out". That seems like fuel or electric problem to me. If you already checked the ECU, then suspect the dizzy, possibly the magnetic pickup if its electric ignition and if the dist is a little old. I wouldnt think the clicking would be associated with electrics, other than possibly the coil wire arcing off a plug wire, i dont have a definitive idea in relation to that aspect of the problem.....
-Justin