ANALYSIS OF COMMON MOTORCYCLE ENGINE FAILURES IN LOCAL WORKSHOPS: A CASE STUDY IN BANGLADESH

Abstract

Motorcycles are one of the most widely used modes of transportation in developing countries due to their affordability, fuel efficiency, and convenience. In Bangladesh, motorcycles are extensively used for both personal and commercial purposes. However, frequent engine failures reduce vehicle performance, increase maintenance costs, and negatively affect rider safety. This study investigates the common causes of motorcycle engine failures based on data collected from local repair workshops. The research focuses on identifying failure patterns, analyzing mechanical causes, and evaluating the role of maintenance practices. A total of 50 motorcycles were examined through direct inspection, mechanic interviews, and service record analysis. The study reveals that piston ring wear, lubrication failure, overheating, and valve damage are the most common causes of engine failure. Quantitative analysis was conducted to calculate failure frequency, mean time between failures, and maintenance cost implications. The findings indicate that improper maintenance and poor lubrication significantly reduce engine life. The study concludes with practical recommendations to improve engine durability and reduce operational costs.