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Mercedes believe they have identified the reason behind Lewis Hamilton's engine failure at last weekend's Malaysia Grand Prix.
After the race, the engine was send back to Mercedes AMG High Performance Powertrains in Brixworth, UK, where it was analysed and it was determined that part failure was what caused Hamilton's retirement with 16 laps to go.
"Our analysis has shown that Lewis’ engine suffered a big-end bearing failure," a spokesman for the team revealed.
Mercedes figure out what made Hamilton's engine blow up
By F1i
38 minutes ago
Mercedes has put precautions in place at the Japanese Grand Prix to protect against repeat power unit failures following Lewis Hamilton's retirement in Malaysia.
Hamilton retired from the lead with 16 laps remaining at Sepang, dropping him 23 points behind team-mate Nico Rosberg in the championship standings. Mercedes has now found which part failed on Hamilton's car but has had to take precautions - including the delay of customer engines - as it doesn't fully understand the cause yet.
"Our analysis has shown that Lewis’ engine suffered a big-end bearing failure," a team spokesman said. "This happened without warning after 618km and was preceded by a loss of oil pressure in Turn 15. For this race weekend, Lewis will revert to his Singapore unit and Nico will use his Malaysia engine."
The team also revealed that they have changes certain parameters for all Mercedes engines this weekend, including those ran by customers.
"We will introduce revised running parameters for all Mercedes engines this weekend. To include but not limited to a different, more conservative oil specification," said the spokesman. "Planned new engines for five customer drivers this weekend will be delayed to contain further possible learning from the strip of the failed unit. They will continue to use their units from Malaysia."
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