Sunday's Formula Renault 3.5 qualifying and race have been shortened due to an engine problem that was detected on Saturday.
Championship organisers announced on Sunday morning that a potential reliability issue with the engines had been discovered after the first race of the weekend.
It has been decided that qualifying be reduced from 30 minutes to 15, and the race time shortened from 44 minutes +1 lap to 29 minutes +1 lap, with the mandatory pitstop being dropped.
A statement from the organisers said: "At the end of the first race, the Renault Sport Technologies engineers detected a minor technical issue in a restricted number of engines with a potential impact on their reliability.
"With the aim of ensuring sporting equity, the sporting stewards, under the advice of the technical management, has announced this morning to the participants that the timed qualifying session and the time of the race will be reduced.
"The organising committee apologises for any inconveniences that this decision may cause to our partners and the spectators."
AUTOSPORT understands that Renault Sport Technologies and Zytek plan to investigate the problem further after the weekend, with the intention of making changes to the engines before the next round in Monaco on May 26.
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