cylinder #3 misfire on 1999 Oldsmobile Alero

My check engine light comes on and the engine begins misfiring. Scan shows #3 misfire change spark plugs still has misfire any tips ?

Asked by for the 1999 Oldsmobile Alero
Here is a ton of useful info about misfiring #3 cylinder (P0303 Code)
Excellent, thanks.
1 more answer , 1 more comment
i have a 2000 alero with a 3.4 engine i had the same problem.
i changed my coil pack leading to cyl. 3 problem solved
did replacing the coil pack fix the problem