supra wont start after tune up

[kadinz]

wires cap and rotor, i first replaced the rotar the day before and i got the cap and wires in the mail the next day and replaced them, it started with a problem it would have a random misfire and would barely drive, was good at high rpm's but still wouldn't drive well, got home...fiddled with a few things and it started with still a little misfire but not bad, i drove it around and it got better. i got home and looked under the hood, clamped a coolant line and now its barely starting. i have no idea AT ALL why, checked the fuses and the alternator one is a little dark so i tried to take it out and cracked it, it won;'t come out. i dont know what the hell is wrong. the alternator fuse wouldnt make it do this would it? it fires barely at all..