AboutRobert Summers Expertise domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada
Experience 40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.
Organizations CFIB (current) past member AARO and APAA.
Education/Credentials grade 12 plus 2 years college. many aftermarket training courses
Question The engine runs rough and misfires what to do or look for
Answer Hi Shellisa....well it could be a lot of things... when was last tune up, have you ever changed the O2 sensors, do you have a plugged cat converter, you don't say what year or engine size it is...have you installed a scan tool to see if there are any codes, could you have a bad tank of fuel, do you have correct fuel pressure (if in tank pump) or maybe plugged fuel filter. Broken or frayed wiring touching ground, plugged fuel injectors (if it has them) plugged or dirty EGR valve, plugged or dirty IAC... and i could make the list longer...try looking at the basics...do you have proper air,fuel,spark...and go from there...install scan tool and see if problem is computer related...sorry i can't be more accurate , hope this helps
