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    Backfiring blues

    Holden Holden Advice Holden Commodore Holden Commodore Advice Holden Commodore 1997
    I have a 1997 Commodore VS II Executive V6 running on LPG which was fitted by Holden. In the past couple of months it has been backfiring and blowing holes in the air-cleaner box. I have had a gas service that included installing new plugs and leads but am still getting the occasional backfire. Is this a common problem and can it be fixed?
    Answered by CarsGuide
    19 June 2003
    Carsguide.com.au

    Since you have covered the basics of fitting new spark plugs and leads, I'd look deeper. It sounds as if you might have a burnt valve so I'd suggest you get a mechanic to do a compression test on the engine and look for a cylinder that is not holding compression.

    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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