Williams has confirmed that its pre-season programme will get underway on Tuesday morning, as it will sit out Monday's session.
The Grove squad launched its new car, the FW42 last week with a fresh livery and a brand new title sponsor. The team will be looking to bounce back from a tough 2018 campaign in which it ended up at the bottom of the constructors' championship with just seven points.
The team cancelled a planned shakedown of the FW42 on Saturday as it was behind schedule.
Claire Williams, deputy team principal at Williams said: “Unfortunately, we have had to delay the start of our pre-season Barcelona test to Tuesday morning. We have had an incredibly busy winter at Grove getting the FW42 prepared for the season ahead and, despite everyone’s best efforts, we need some more time before it will be ready to run.
“Our absolute priority is to always ensure we bring a car to the track that is the best that it can be and sometimes that takes longer than you’d anticipate or like. It’s clearly not ideal, but equally it’s not the end of the world.
“We will obviously have our work cut out to recover the time lost but we still have seven days of testing left and we will be maximising that time to prepare the car for the first race.”
The team has also confirmed its driver schedule for the first week. On Tuesday, rookie George Russell will debut the car in the morning, with Williams' test and development driver Nicholas Latifi stepping in for the afternoon.
Wednesday will see Latifi drive in the morning before Robert Kubica takes over in the afternoon. The final day of the first week will see both Russell and Kubica behind the cockpit, with Kubica taking the morning session and Russell ending the week for the team.
Bahrain International Circuit - Winter testing
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