An All Terrain Vehicle (ATV) is a four-wheeled vehicle designed for driving on uneven terrain. Manufacturers of ATVs include Honda, Yamaha, Polaris, Suzuki, Kawasaki, Arctic Cat, Can-Am, John Deere, Kymco, Bennche and OLink. ATVs are designed for recreation and enjoyed by many consumers. However, engine problems are a major concern.
In an ATV.com forum, the owner of a 2008 Polaris 700 X2 complained about a clicking noise in the engine when the truck idled. He believed that the clicking noise came from the lifters. A dealership informed him that the clicking sound is a normal two-stroke engine noise.