Force India's Paul di Resta says 'fundamental' car issue now solved

Di Resta has failed to score a point since the Singapore Grand Prix and has been overshadowed by the performances of team-mate Nico Hulkenberg, who has been in the points in Japan, Korea and India.

Di Resta admitted a "fundamental" problem with his car has been hindering his form.

"I think there is one fundamental thing that we have picked up on and after the last races it has been getting progressively worse and worse, but I don't think it has been that easy to identify what it has been," di Resta told reporters in Abu Dhabi.

"We hope that we have resolved the issues by taking action for this grand prix."

Although the Scot refused to go into details about the problem, he said the team had identified it before the Indian GP last Sunday.

"I am not saying what it is, but as I said in India, we picked up on it on Saturday night, which was probably not the best time because you kind of knew the race was going to be difficult," he added.

"So for probably one of the best races I have ever driven in India, personally getting what I could out of the car, it was not rewarding enough.

"But I left India far more satisfied than I left Korea, and I think that is a fundamental thing relative to what they have looked at.

"I think since then everybody within the factory and within this team has investigated further and picked up on a few other things and I think going into this event certainly tomorrow is crucial and I think you will see it after the first run that it has made a difference."

He added: "There is definitely something that we have highlighted and as I said, having the team looking at it in more depth, we have found a few more things. At the end of the day, I am sure they understood how difficult my race was in India and through nothing other than this thing."