egr or timing backfire

teringer said
Could be a wiped cam, cracked dist cap , A cold engine with out a working choke, dist loose , ect,ect .

cap, rotor and wires are all new so hoping I don't need to rma them, and no, I changed them after the backfire that deafened us and got rid my pesky hair, in an effort to solve the problem, and they made no difference