Wayne Taylor Racing leads Rolex 24 at Daytona, but Mazda Team Joest hit a double backlash when both of his Mazda RT24 Ps hit problems in moments of each other.
No. 55 Mazda went into the garage after stopping at the track in Olivier Plas's hands, which was able to haul the car back to the garage, where the team diagnosed fuel leakage.
Just moments later, No. 77 by Timo Bernhard came to a standstill with a fire on the back of the post.
This car was driving on the main ball at the time, while number 55 had already encountered several setbacks, including contact with the GT Daytona class Acura NSX GT3 from Katherine Legge.
Mazda has announced that No. 77 cannot be repaired and it has been retired.
The fire caused the yellow flag to appear for the fifth time in the race, the four full course floors darkened from last year's Rolex 24 within seven hours.
Kobayashi currently head top spot in No. 10 Cadillac DPi.VR over # 85 Cadillac DPi from Rubens Barrichello, while Juan Pablo Montoya holds third overall for Acura Team Penske.
Ben Hanley's No. 81 DragonSpeed Oreca 07 Gibson leads LMP2 in front of Ryan Cullen in the sister post. The two DragonSpeed cars are the only entrances that remain on the main ball of the class.
Nick Tandy and Earl Bamber hold the first and third in the GT Le Mans for the Porsche GT Team, melting No. 62 Risi Competizione Ferrari 488 GT James Calado.
In GT Daytona, Nick Boulle led the way to Park Place Motorsports followed by No. 29 Montaplast by Land Audi R8 LMS GT3 from Dries Vanthoor and Mercedes-AMG Team No. 33 Mercedes Riley Motorsports car powered by Luca Stolz.