wouldnt idle now wont start

[1995240sxSE]

I changed headgasket. I have the timing set right. The cam timing is correct. I am getting fuel. It wouldnt stay idling and now it wont even fire.I keep setting timing via dizzy and the same thing almost. I have fouled the plugs. burnt them off with ether. Current setup:t304esafc480cc injectorswalbro 255lphmsd 6btmq45 90mm maf everything is wired in good and the only cel's are to do with a 5 speed swap except I am getting code 21 but I think that is due to the mod of the s14 dizzy to make msd work. Everything was running yesterday it would just stall at idle! PLEASE HELP. my vac lines are good no ic leaks I am lost!