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    Fuel injector life expectancy

    BMW BMW Advice BMW 2002 BMW 2002 Advice BMW 2002 1975
    I notice from reading your column that quite a few cars need fuel injectors changed. Could you please tell me what is the expected life of an injector under metropolitan driving conditions? The reason I ask is because I own a 1975 BMW 2002tii which has a Kugelfischer mechanical fuel-injection system, and my mechanic says that he would not tamper with it. Apparently the injection system on my car has not been touched since the car was new, yet it has never given me any trouble. I understand that modern electronic fuel-injection systems are more sophisticated and fuel efficient than my old system, yet how much of the savings in fuel are lost by having to replace fuel injectors at $700 a pop? I sometimes wonder whether the complexity of today's cars is more trouble than they are worth.
    Answered by CarsGuide
    12 October 2012
    Graham Smith

    There is no "expected life" of injectors as such, but it's clear that some cars are needing new injectors earlier than in past times. Your mechanical fuel-injection system is quite different to today's systems.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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