Newtorwd

So I just recently had a rebuilt not to long ago. So I notice my car misfiring, so I check plug 1 it's all black but 2-4 where fine. Just replaced wires and plugs last night with ngk wires and plugs. So I drive it in the morning runs fine, but later when I hit the freeway driving 65 I accelrate to 70 but seems like it's hesitating to get there what could be the issue there ? Plugs were tight and also wires were on, any info ??


Coworker told me could be low compression on 1 or timing is off?