ok so my engine is a 305 non-computer controlled carb.. see sig for list of parts on the car...


ok so.. last night the car is running awesome.. pulls like a banshee, idle's very smooth.. ect.

i get in it today, start her up... starts up fine.. but theres just a slight roughness to the idle... not that bad.. but.. you know when your car is just not quite right.

so i let it warm up and put it in reverse(manual tranny) and i can now feel a noticable rumble in the idle..

i drive down the street and i can feel that the great power it once had is about 90% there.. and the exhaust is now a little bit rougher too..

i checked the spark plug wires, all are on and new 9mm, all are ok. no vacum leaks, nothing unusual under the hood..

car drives fine.. still have power through out the band.. but in low RPM its not there.

whats up this car??? new spark plug time?? anyone with any info.. help me.. please..