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Procedure The procedure to carry out this engine performance test is divided into three parts that is the procedure before the experiment, during the experiment and after the experiment. The procedure before the experiment is to set up the experimental equipments and to ensure the engine is able to operate properly. As for the procedure during the experiment, it is to collect the engine operating data. These data include fuel consumption, exhaust emissions, operating temperatures, intake air pressure, intake air velocity for various engine speeds with different loads. This procedure is divided into two stages. The first stage is to collect the data during the engine warm up whereas the second stage is to collect the data in steady state condition. In second stage, there are two types of test to be carried out that is the fuel consumption test and the engine performance test. Then, it is follow up by the procedure after experiment to clear and tidy up the experimental equipments. The procedures are as follows:- (A) Before Experiment 1. Prepare the data sheets and table. 2. Record the ambient temperature, atmospheric pressure and humidity. 3. Check the cooling water level at radiator and refill if necessary. 4. Che