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    Holden Commodore: Fuel injection issues

    Holden Holden Advice Holden Commodore Holden Commodore Advice Holden Commodore 2012
    For months, all went well after I converted my Commodore to run on LPG using an injection system, but after a period of time it began to run roughly. My installer diagnosed blocked injectors due to contaminated LPG as the cause of the problem and recommended replacing them. After the work was done, at a cost of $1200, the problem appeared to be fixed, but it surfaced again after a little time had passed, and again the problem was diagnosed as blocked injectors due to contaminated gas, even though I had switched to a different LPG outlet as recommended. Again the blocked injectors were replaced and the car ran well for a short time before the rough running returned. The LPG installer again diagnosed blocked injectors due to contaminated LPG. I have now blown any of the savings I hoped to make by converting to LPG in the first place. What can I do?
    Answered by CarsGuide
    30 August 2012
    Graham Smith

    We checked around and found that there are reports of fuel quality issues resulting in injectors being blocked. The issue is thought to be predominately caused by contaminants in the gas leaching plasticizers from flexible rubber hoses installed on some LPG vehicles, which then migrates to the injectors. The recommendation we were given is to inspect the car's fuel delivery lines and if they are rubber check their extractability rating. If the rating is not near zero, then have them replaced with either copper lines or zero extractable flexible lines.

    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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