Stringent emission regulations on one hand and increasing demand for better fuel economy along with lower noise levels on the other hand require adoption of advanced common-rail direct-injection (CRDI) technologies in diesel engines. The aim of this work is to develop a CRDI diesel engine test facility and study its combustion noise characteristics at different engine operating conditions. The system consisted of a commercially available two-cylinder diesel engine with displacement volume of 909 cm3. The engine was coupled with an eddy current dynamometer for loading purposes. The engine is then used for the analysis of combustion noise at different engine operating conditions. Experiments were conducted at different loads and engine speeds, incorporating both single and multiple injection strategies along with different injection timings. In the case of multiple injections, the influence of pilot injection quantity is also evaluated on combustion noise while maintaining the same load. In-cylinder pressure was recorded with a resolution of 0.1 crank angle degree, and it was used for the quantitative analysis of noise assessed from the resulting cylinder pressure spectra, and sound pressure level. Results showed that the quantity of pilot injection has a considerable influence on combustion noise.