car wont start

[bware113]

about a week and a half ago I noticed that my car was skipping or misfiiring. so as of thurday last week I changed the spark plugs...when I cranked up the car afterwards it actually sounded worse...so as of last saturday I replaced the wires...now, it turns over,but wont start... ive been lookin at the car all week and cant figure out the problem...I checked the distributor cap and it seemed fine...I looked at the spark plugs and they looked as if they werent firing...cylinder 1&2 were clean...3&4 were slightly blacked but only a dot...can anyone help me please??

[ACESXX]

--> ummm ill probably check the MAF and if there is any smoke I would probably put some injector cleaner and gas treatment STP is good... it worked for me @ least!