Rough under load Options

[Dwagenfuehr]

Let me start at the beginning, 74 2.0 fuel injected. The car has ran great for 10 years one day a few weeks ago after being inspected it started running very rough then died. The one part you never expect to fail had gone. The fuel pressure regulator, as a result I had 80 pounds on the lines for a short amount of time. This has now been replaced back to 29 pounds on the line at idle.

The car idles fine maybe a little dip in rpms from time to time. But the second it is put into gear and start off down the street its very rough lack of power and back firing at me with a white-ish haze left behind anytime under heavy throttle.

I recently upgraded and removed the old points and put in a Pertronix unit. By there recommendations Dwell should be 50+ and its riding right around 75-80.

I was immediately drawn to timing after all this checked out, but I cannot put together how timing would of been thrown out the window just on a around the time drive. My issue with timing has always been, its close enough I have NEVER successfully got timing perfect on this car because I believe the last time we had the motor out the impeller was put on wrong some how. Finding TDC is simple enough by pulling #1 plug out and turning the impeller until it is found. checking to see if the rotor is with in the 12 degree window. and then marking the impeller with white out, even with this being done I cannot find it.

This car has been auto crossed and ran around Texas world speedway un-countable times with the timing "close enough" could this really be my issue?

My other concern is injectors with 80 pounds on them is it possible they were damaged? From my understanding is its probably very unlikely just because of how they are built.