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The A-series engines, released by Toyota Motor Corporation, are inline-four internal combustion engines, varying from 1.3 L to 1.8 L. These engines have engine blocks made of cast iron and cylinder heads made of aluminium.
Toyota launched the manufacturing of the A-series engines at the end of the 1970s, trying to find a substitution for the K-series engines for its new Tercel model. The company aspired to build an engine with a modern design and, simultaneously, great fuel efficiency, high performance and minimal emissions.
The A-series consists of DOHC (one of the debut mass-production engines of the Japanese manufacturers), 4-valve-per-cylinder, the 4A-GE engines, and the first modifications of 5-valve-per-cylinder engines.
Toyota released a single 7A-FE modification of the engine with a capacity from 105 hp to 120 hp. However, the 7A-FE Lean Burn engine, the least powerful one, turned out to be rather problematic, and its servicing is rather expensive. So, it’s not the best choice.
The firing order of the 7A-FE engine is 1-3-4-2.
Simultaneously with 7A engines, the brand also manufactured the newer variants of 4A and 5A engines.
The 7A-FE features a toothed timing belt, which must be changed after the car runs 60,000 miles/100 000 kilometres.
In 1998, Toyota started to produce the 1ZZ engine instead of the 7A-FE one.