Another Truck Engine Question

[hobsiscool]

Ok, I have a new theory...bad spark plugs? truck runs, but tries to stall if i'm going up a hill...would this make it a little louder than normal? it runs kinda jerky i'd say when you try to accelerate...would this cause it to smoke while it's warming up...i'm just trying narrow things down..help! i know all I have to do is pull the plugs, but it's dark and cold outside and I won't get a chance to do it until this weekend so I was just wondering if this sounds feasible. Thanks!