Lotus have revealed that Pastor Maldonado's impact with the kerbs at Spa registered at 17G and is why his E23 lost power.
On a day when Lotus had one of the better cars out on track, Maldonado had a dismal Sunday afternoon at the Belgian Grand Prix.
The Venezuelan driver was forced into retirement on lap 2 when his E23 lost power.
However, it seems it wasn't so much an issue with the car but rather a massive smack into the kerbs that cost him.
"We are still checking all the parts but he had a big excursion at Eau Rouge and hit some kerbs very hard which gave the chassis a 17G impact," explained Lotus technical director Nick Chester.
"That looks to have effectively knocked the power off the car and although he managed to get the power back on, it looks like we might have damaged the clutch control valve.
"Even though we may have been able to reset it when Pastor came back to the pits, we looked at the extent of the damage and decided to retire the car."