2008 Buick Lucerne Q&A
2008 Buick Lucerne Question: Engine knock sound
sound like spark knock need run 93 oct gas - delane 72 garage and body shop
There are three metal knocks, in quick succession, resembles radial tires going over a crack in the road. Happens as fast as you can read knock, knock, knock. It is solid sound, not a tinty and n...