have a 96 z28 and just replaced all wire's and plug's wire's=oem plugs'= bosh p4 all have maybe 60 mile's on them now i have a p0300 misfireing code not sure where to start other than checking everything piece by piece anyone have any idea best way to go about this?

 

If you did a search, then you noticed this comes up quite often. Unfortunately, not many people post what cured the problem. Everytime I've had the problem, it was a burned plug wire.