Mario Dominguez was forced to sit out the first day of running ahead of the Indy 500 after technical gremlins hit the Pacific Coast Motorsport team at Indianapolis.

The Mexican racer - and the PCM team - will kickstart its IndyCar campaign in the biggest race on the calendar having only had chance to start work on the #96 Visit Mexico City Dallara 14 days ago.

However, having prepared to hit the track for the first day of rookie orientation, Dominguez then ended up watching from the sidelines after an issue was discovered with the car.

"Once we rolled through tech, three of the four wishbones on the car were deemed unusable by the series," team boss Tyler Tadevic said. "These are suspension pieces that we received with our car and we were not aware these parts are no longer being used.

"The guys have been working hard, we're back to being rookies again. We disseminating tons of information trying to catch up and we'll make sure Mario gets through his orientation tomorrow."