If your car is getting older or you feel like you may be losing some engine power, a compression tester can help sort out the problem.

The variable compression ratio is achieved through a small electric motor that adjusts the variable crankshaft. The process adjusts the length of the piston stroke.

The recall involves the Nissan Rogue and Altima, as well as the Infiniti QX50 and QX55, equipped with VC-Turbo engines.. Nissan North America is recalling 443,899 vehicles over a potential engine ...