I need to change my spark plugs, unfortunately I don't know the gap I need to set. I don't have a user or maintenance manual, its not anywhere under the hood, and google is not finding anything. So, where would I go to get this information, for free? I'd rather not buy a maintenance manual for one little piece of data.
In case anyone has the relevant manuals, the car is a 1985 Pontiac Bonneville, with a 3.6L V6 engine.