 Complete the following phrase:  Guerrero began competing in Formula One in 1982 for Ensign Racing, beginning the season in a No. 14 Café de ColombiaModa Caribu Ensign N180B-Ford Cosworth DFV at the season-opening South African Grand Prix. He failed to qualify for the event due to Guerreros Formula Two team Maurer Motorsport and its boss Willy Maurer filing an injunction to Ensign team boss Morris Nunn and as a result Guerrero was withdrawn from the race. An official press report from Nunn stated that Guerrero was in an inappropriate physical and mental condition to drive. Guerrero returned for the following race, the Brazilian Grand Prix, in a new Ensign N181. He again failed to qualify for the race. Guerrero qualified for the third race of the season, the United States Grand Prix West, starting 19th and finished 15th after crashing 27 laps into the race. Ensign skipped the San Marino Grand Prix due to the FISAFOCA war and Guerrero then failed to qualify for the Belgian Grand Prix. At the Monaco Grand Prix Ensigns tire supplier Avon withdrew from Formula One and that left the team tireless. The team got some older tires to use for the race, but Guerrero failed to qualify. Michelin started supplying tires to the team after Monaco and Guerrero qualified for Michelins first race for the team, the 