tacmeter

any one no the diagnosis of these problems? i have a 79 chev engine,started running funny intermitantly,has a edelb carb,new feul filter i just put on,new plugs,i tried to adjust timing alittle,had a mild cam put in a couple years ago when rebuilt,now tonight the oil pressure dropped out then picked upas i rived it then dropped off when i let off gas aways,at end around same time i think fuel punp quit,cuz the filter b4 the carb emtyed as i t died, right b4 that it was bubbling inside the filter