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Clean problem: Hulkenberg stopped the vacuum in the tank

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Clean problem found
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I It is now clear what Nico Hülkenberg is up to at the Australian GP stopped at the start of the race. The leak in the tank was the result of a vacuum that was created during refueling. The tank bladder suddenly contracted. The pressure was so high that one of the four fastening bolts broke out. The tank bladder was damaged.

Problem should not be repeated

Why the vacuum was created, can probably never be found out. 'There are two or three possible reasons that we can only prevent after the elimination process. There will be no repetition of the case,' explained team boss Monisha Kaltenborn.

One possible reason: The vacuum was already created when fuel was sucked out the evening before the race before the parc fermé went. 48 liters per minute are pumped out. It is possible that the ventilation did not work as intended.

New Sauber chassis for Malaysia

The problem could not be solved on site in a hurry. The installation and removal of a tank is a complex business. In modern cars, the cockpit back wall has to be cut out to accommodate the plastic bladder in the cavity behind the driver's seat. That is one day's work and has to be done in the factory.

For the race in Malaysia, Nico Hülkenberg will compete with a new chassis. This is the replacement version that was already there in Australia. A new replacement chassis has already arrived on the route in Sepang. The old carbon tube was shipped directly from Melbourne back to the factory in Hinwil.

Hülkenberg hopes for Malaysia points

Hülkenberg himself takes the technical mishap from Melbourne with him To take gallows humor. 'I'm getting worse and worse in Australia. At the first attempt in 2010 I made it to turn ten, last year to turn one and this season not even to the start. Actually, I like the race. I would like to finish.'

He's hoping for more luck in Malaysia. 'The track could suit our car better. My record is not bad here. I was always in the points. Of course I want to continue that. The fact that I couldn't drive the race in Melbourne is of course a small disadvantage.'

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