2ct Engine Knocking Any thoughts?

About Toyota MasterAce

The Toyota LiteAce and TownAce are a line of light commercial and derivative passenger vans produced by the Japanese car manufacturer Toyota. These vehicles originally utilized the cab-over-engine configuration, although since 1996 a semi-cab-over arrangement has featured instead. The LiteAce launched in 1970 as light-duty truck, with commercial and van/wagon body variants added in 1971. In 1976, Toyota released the larger TownAce van/wagon that derived from the LiteAce; a TownAce truck arrived ...