check engine light still on

[rortiz2005]

my check engine light came on the other day.. i got it diagnosed at advanced auto and the computer said cylinder 3 was missfiring...i changed my spak plugs and also changed the engine coil... check engine light is still on... and its struggling when im gettin to 3rpms.. i dnt know much about cars... wat should i do?? help please

 

[hornsfan10609]

Make sure the gap of the plugs is correct (".028-".032). NGK plugs are gapped too wide when you buy them and you have to close them up a little. Could be a bad wire or coil boot if you didn't replace them.

 

[jayrzavala]

I have the same issue but its with my #2 cylinder....what ever fix your problem