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    Commodore gas backfires

    Holden Holden Advice Holden Commodore Holden Commodore Advice Holden Commodore 1986
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    I BOUGHT a 1986 VL dual-fuel Commodore wagon last year and have had nothing but problems with LPG. The car often backfires and blows the air filter to bits. We have been taking it to a company which seemed to be experienced with gas, but we keep getting the same result. Now I can't run it on gas at all. Is there somewhere I could take it for a definitive opinion on what to do?
    Answered by CarsGuide
    10 February 2006
    Carsguide.com.au

    YOUR problem isn't unique. Start by making sure your ignition and fuel settings are correct. If they are, have a leakdown test done to determine if you have a leaking valve or valve guide. They are a common cause of backfiring. The air/fuel mix in the intake manifold is igniting and the pressure created is blowing your intake box apart.

    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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