55 Used Bosch Diesel Fuel Injectors Put to the Test - How Many Passed? 

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Contrary to popular belief, mechanical diesel fuel injectors will not go forever. Indeed they are very rugged, but due to age and poor maintenance they can suffer from a number of maladies. In this video Kent goes over the results of his test, explains the reasons for failure, shows the difference between a bad injector and a good one, and talks about what can be done to increase diesel performance and fuel economy.