Dieselnoi was born in Tambon Huakoon, Nakhon Luang, Ayutthaya province. He started practicing Muay Thai at the Sor Banchongsak training camp under the guidance of Banchong Ngarm-ket. According to the Thai tradition, his first fighting name was Dieselnoi Sor Banchongsak, named in the honor of his first gym. He made his muaythai debut in the 32 kg weight division. After 4–5 bouts, he changed the camp and fought under the name of Dieselnoi Sor Vorakulchai at Sri Ratcha, Chonburi. In 1979, he changed his name again and boxed for the Chor Thanasukarn camp, where he remained for the rest of his career. In 1981, Dieselnoi fought Koapong Sittichuchai and won the Lumpinee Stadium Lightweight championship title. It was their third meeting after one knock out win each in their previous fights. Due to a lack of challengers he would remain idle for 15 months. His next fight was at the World Free-style Martial Arts Championship held in Bangkok, in April of 1982, taking the 135 lb division in the finals vs the Japanese kickboxer Shinobu Onuki. Then on December 24th 1982, Dieselnoi fought Samart Payakaroon meeting at catch weight132 lbs in a superfight. Dieselnoi weighed in at 129.7 to prove that he could have reached 130 lbs. He outscored the 1981 Fighter of the Year Samart with his trademark knee attacks. It was one of the biggest muaythai fights in 1980's with Samart taking a purse of 350,000 and Dieselnoi a purse of 400,000 baht, a record at the time. Dieselnoi was awarded the prestigious Sports Writer's 1982 Fighter of the Year Award. Dieselnoi reigned over the lightweight division for 17 more months without any challengers. On June 7th he faced Sakat Petchyindee at Rajadamnern Stadium at catch weight. It was again Dieselnoi's overpowering knee strikes that won him the bout. Then Dieselnoi would fly to America and face the American kickboxer John Moncayo, who was given a 5 kg advantage on the scale, in a modified rules fight. Dieselnoi was victorious. When he returned to Thailand he then faced Sagat a second time, on October 6th, 1984 in Ubon Ratchthani, winning on points again. Dieselnoi's final two fights were vs Krongsak Prakong-Boranrat. They would fight to a draw at Rajadamnern Stadium in Bangkok on August 8th, 1985, and then Dieselnoi would beat him on points on November 12th, 1985 at Lumpinee Stadium. Both fights at 132 lbs. After being the champion for four consecutive years he was eventually stripped from his 135 lb Lumpinee title and forced to retire because there was nobody in the weight division left to contest the belt.
