Why is it difficult to start an Audi A6 when hot but starts easily when cold?

1 Answers
McHailey
07/29/25 3:24pm
Due to inaccurate signals from the coolant temperature sensor, excessive fuel is injected during startup, resulting in an overly rich air-fuel mixture, which makes ignition difficult and causes hot-start issues. In this situation, pressing the accelerator pedal increases the intake air volume during startup, reducing the concentration of the air-fuel mixture, making it easier to start the engine. Below is relevant information about the Audi A6: 1. The new Audi A6 adopts the same front-end design as the domestically produced Audi A6L, featuring the brand's iconic hexagonal grille paired with platinum-gray air intake trim strips on both sides, creating a highly recognizable front face. 2. In terms of body dimensions, the Audi A6 measures 4951/1886/1483mm in length, width, and height, with a wheelbase of 2925mm. It is equipped with the MMI multimedia interactive system, AudiConnect connectivity technology, Audi's integrated pre-sense safety system, rearview camera, cruise control, comfort key, driver's seat with memory function, electric trunk, panoramic sunroof, and other configurations.
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