One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...

Exhaust smoke color is one of the fastest ways to spot a sick engine — white, blue, and black each tell a different story. Sellers sometimes clear dashboard warning codes before a sale, but a simple ...

Within the Pontiac community, there are many who are very good at physically working on their cars. Changing parts, swinging motors, and the like comes very naturally to them. But when chasing a ...