According to Automotive News, McLaren’s latest supercar has been recalled due to potential fuel leaks. The issue is caused by a faulty nut on the high-pressure fuel line that can allow fuel to escape and potentially result in a fire due to the proximity to hot engine components. The recall states that the nuts are at the greatest risk of loosening “during dynamic driving maneuvers commonly associated with track running.” The recall affects a small number of cars and McLaren will replace the faulty parts free of charge.
McLaren has announced a recall of its Artura supercar due to potential fuel leaks caused by faulty nuts on the high-pressure fuel line. The company identified that the cold-formed nuts with rolled threads were not sufficient to prevent the fuel line from leaking. McLaren will replace the current parts with a new fuel line featuring a longer, fully-machined nut with cut threads to fix the issue. These new nuts are expected to remain properly secured without loosening over time.
It is worth noting that McLaren originally intended to use fully-machined nuts, but due to a potential shortage from their supplier, the decision was made to use cold-formed nuts in March 2021. Despite passing durability tests, these nuts have proven to be inadequate for the task. The recall affects many cars, and McLaren will replace the faulty parts at no cost to the owners.
The problem lies with a faulty nut on the car’s high-pressure fuel line, which can allow fuel to escape and potentially cause a fire due to its proximity to hot engine components. The issue was discovered in June 2022 when an Artura with just 1,000 km on the clock suffered a fuel leak after being driven on the track. The leak was traced back to the left-hand high-pressure fuel pipe, where the nut connecting the line to the pump outlet had come undone.
This prompted McLaren to devise a special tightening procedure for the nuts in question, but in November 2022, another Artura with 2,800 km on the clock experienced a similar leak after being used on the track. This prompted the recall, which affects less than 50 vehicles that have been delivered to customers so far, as well as vehicles in the company’s marketing and press fleets. No injuries have been reported in relation to the issue. McLaren will replace the faulty nuts with fully-machined parts free of charge for affected customers.
