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    Mitsubishi Challenger diesel acceleration problems

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    My Mitsubishi Challenger diesel is having problems with breaking down under acceleration. It feels a bit like a faulty lead or spark plug (I know a diesel doesn't have spark plugs). I have changed the suction control valve but I’m still having the same problem. What do you think the problem could be?

    Answered by CarsGuide
    25 October 2024
    David Morley

    You’re probably right in thinking there’s a problem in the fuel system, but simply changing bit and pieces you think might be the cause is a great way to waste money replacing parts that turned out to be perfectly good, leaving you with the same problem. Take the vehicle to a diesel specialist. The cause could be dozens of things from fuel-pump wear, a dirty fuel filter, a clogged intake manifold, blocked lines and worn fuel injectors. And more.

    A specialist diesel shop will be able to take the guesswork out of a diagnosis and will almost certainly save you time and money.

    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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