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    2001 Mitsubishi Verada is misfiring but not showing errors

    Mitsubishi Mitsubishi Advice Mitsubishi Verada Mitsubishi Verada Advice Mitsubishi Verada 2001
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    My 2001 Mitsubishi Verada is misfiring but the mechanic’s computer shows no error messages and no codes coming up. It has oil leaks from both rocker covers and is misfiring under load. I have replaced the front rocker cover seal, leads and plugs, which made a slight improvement but it still misfires. I’m now looking to remove the rear manifold to get access to other plugs and seals. Are there any instructions and images on how to safely remove the intake manifold?

    Answered by CarsGuide
    14 January 2025
    David Morley

    Some of these east-west mounted V6s can be very difficult to access the rear bank of cylinders. A quality workshop manual will detail how to remove the rear rocker cover and spark plugs, and there are also some very good online tutorials you can tap into.

    The fact that no error codes have been logged suggests that the spark plugs are at fault. In some cases, on-board computers can detect a bad ignition lead or coil, but will not recognise a dud spark plug. But oil leaks can also cause misfires if the oil gets into contact with the leads or spark plug contacts, too, so the leaks need to be fixed as well. The spark plug theory is also supported by the fact that the miss is occurring under load, which is when an ignition system is working its hardest.

    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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