Alex Wurz was instructed to park his ailing Williams-Toyota at Spa-Francorchamps after the team failed to find a cure for a fuel pressure problem.

Post-race information published by the team reveals that various attempts to solve the Austrian's problem failed to provide a satisfactory outcome, forcing him to retire

"Alex was fuelled for a one-stop [strategy] given his likely position in traffic and the freedom to add fuel as required," the statement explained, "The one-stop plan was altered during the course of the race, however, when his car began to show fuel pressure drop-outs.

"The pitwall decided to call him in early to see if the addition of fuel might recover the situation, which it briefly did for six or seven laps, but then the problem manifested itself again, and a second unscheduled stop to overfuel the car was again called to see if this might provide a fix. In the event, the team decided to retire Alex's car on lap 34 as the problem could not be cured.

"The decision to pre-emptively call the car in rather than risking damage to the engine means that the failure could be effectively identified and investigated, a process which is currently ongoing."

The problem contributed to only the third mechanical retirement that the team has suffered in 28 car starts this season, but technical director Sam Michael was still not happy.

"The outcome of the race was good in terms of the championship, which is the ultimate objective, but we have been very focused around restoring our reliability this season, so some aspects of the weekend were a little disappointing," the Australian said, reflecting on Wurz's retirement and team-mate Nico Rosberg's sixth place.

Williams will test this week at Jerez prior to departing for Asia the following week for the back-to-back races in Japan and China.

"As much as look into the problem that caused Alex's retirement, we also have an ongoing development plan to bring more to the car as the margins between third, fourth and fifth place in the championship could turn on a race," Michael continued, "We need to be doing our level best to collect as many points as possible in the next three grands prix."

 

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