Hey everyone I need some help. I have been trying to set timing on my car for a few weeks now and I got it running a little better but it breaks up really bad at 3k and wont rev any further. I have the dizzy dropped in at 10* base because it wont start at 0 and I advanced it to 16 to get a decent idle. I have my fpr set at 35psi at idle and the instructions say no vacuum line unless running a blower? I think the plugs might be fouled from it running too rich before but what could be the problem? I wouldnt think black spark plugs would cause it to run like this