my sis car has a slight miss kinda sputtering .. doesnt do it when your heavy on the gas .. more when your crusing on the HWY or taking off in first .. we just changed the plugs no longer then 2 months ago .. anything else i could check just in case ?? coil, injectors??

thanks guys

 

bad/dirty/clogged o2 sensor maybe? are you throwing any codes?

 

have you had a swap done if so check the wiring, water in the plug chamber, change the oil, bad dizzy

 

timing

 

you should put a new o2 sensor in it. it is a common problem.