My car has 148.000 miles. When going up hills it bogs down & when going down hills it acts like it is geting to much gas & chokes. When my plugs were changed under one it was full of oil. It's always running rough. Just went and had a troubleshooting done / detected misfire cylinder # 2 & 3 with probable cause (1) ignition system fault plugs ignition wires, coil (2) vacuum leak (3) injector fault (4)high or low fuel pressure/// I have changed plugs & wire only weeks ago. Pls help with any ideas. Thanks!