The ex-Ducati ace was forced to pull over in qualifying yesterday after his bike aggressively jolted.
Having dismounted and discarded the machine, he raced to the garage to get a replacement.
His team-mate, Marc Marquez, faced a similar problem in Termas and struggled to keep control of the bike.
“The chain went out, so I couldn’t continue,” said Lorenzo.
“Clearly it’s a problem”
“I needed to put the bike [against] the wall and I needed to take the other bike.
“It happened also to Marc in Argentina, so it’s the second time.
“Clearly it’s a problem, it’s a thing that happened probably too much.
“The team will investigate and understand what we can do to avoid it in the future.”
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Having ditched his RC213V, Lorenzo jogged gingerly to his garage.
The 31-year-old admits the situation wasn’t ideal given his long-running ankle issues.
“Very tough, the straight was very long, and I left the bike almost at the end of the straight,” he added.
“We were one of the first teams in the pit lane.
“Probably 300 or 400 metres running, with 10kg more on your body, was not easy.
“For sure I will beat not Usain Bolt, I was very slow! But it was the fastest I could go.”
MotoGP starting grid for Grand Prix of the Americas – Austin Texas.
1 Marc Marquez Honda
2 Valentino Rossi Yamaha
3 Cal Crutchlow LCR Honda
4 Jack Miller Pramac Ducati
5 Pol Espargaro KTM
6 Maverick Vinales Yamaha
7 Alex Rins Suzuki
8 Danilo Petrucci Ducati
9 Fabio Quartararo Petronas Yamaha
10 Franco Morbidelli Petronas Yamaha
11 Jorge Lorenzo Honda
12 Francesco Bagnaia Pramac Ducati
13 Andrea Dovizioso Ducati
14 Joan Mir Suzuki
15 Takaaki Nakagami LCR Honda
16 Aleix Espargaro Aprilia
17 Andrea Iannone Aprilia
18 Miguel Oliveira Tech3 KTM
19 Johann Zarco KTM
20 Karel Abraham Avintia Ducati
21 Hafizh Syahrin Tech3 KTM
22 Tito Rabat Avintia Ducati
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