i am new to this site just been looking a few days but i put a new motor in my 92 yj 2.5 and only have about 230 miles on it and when you drive down the highway hold throttle steady at a rpm it sounds like the motor has a slight miss in it you really have to listen or feel for it the throttle?put all new plugs, plugwires,cap and rotor, cilinoid.checked timing several times seems to be right on.the only thing not stock on the motor is a throttle body spacer. all new exhaust but cut out cadalac converter or can i just be hearing the cylinders firing through the exhaust. or maybe iam just paranoid of somthing not right in the new motor and its fine. :idea: