This study aimed to determine the effect of pressure on the fuel nozzle. For that reason, the research was conducted in laboratory experiments quasy Automotive Engineering. The object of this study is the Indirect Injection diesel motor with no load and without using a timing change with variations in pressure nozzle (110, 115, 120, 125, and 130) kg / cm2. The analysis of the data used in this research was descriptive analysis and inferential analysis In several rounds (1000, 1500, and 2000 rpm), we obtained an average
consumption of diesel, the nozzle at a pressure of 110 kg / cm2 = 35.33 cc / minute, the nozzle at a pressure of 115 kg / cm2 = 35 , 33 cc / minute, the nozzle at a pressure of 120 kg / cm2 = 35.05 cc / minute, the nozzle at a pressure of 125 kg / cm2 = 33.67 cc / minute, the nozzle at a pressure of 130 kg / cm2 = 33.67 cc / minute. Based on the results by using Univariate Analysis of Variance with the help of SPSS 12 For Windows sofware, we obtained Fmeasure = 1132.806, and the significance value was 0.00 or smaller than the value of 0.05 or (0.00 <0.05). It means that Ho is rejected and Ha is accepted. This suggested that there was influence of nozzle pressure on diesel fuel use in diesel motor Indirect Injection type L 300
