The transfer of waste plastics has turned into an incredible test to the waste management system and because of urbanization and industrialization has prompted consumption of petroleum derivative for energy prerequisite in different areas. The answers for these issues could be overwhelmed by legitimate use of waste plastics as fuel. The paper depicts a correlation of the utilization of pyrolysis oil which is plastic pyrolysis oil (PPO) and diesel in the appraisal of engine execution. Pyrolysis oil is utilized as fuel to check the execution on one-cylinder with water cooled diesel engine. From the investigation, it was found that without engine adjustment, the PPO offers better engine execution with advancement of Injection timing (IT) and could enhance execution by modifying engine.