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Thread: Dual Fual GU Patrol "limited" to 2500RPM on petrol

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    Dual Fual GU Patrol "limited" to 2500RPM on petrol

    Hi all,

    I'm in the process of purchasing a 98 GU Patrol from my parents which runs on LPG/petrol. It runs perfectly on LPG, however on petrol its as though its limited to 2500RPM, even with your foot to the floor.

    We've replaced the fuel filter, drained the lines, and replaced the spark plugs. Fuel pump is working fine.

    Does anyone have any experience with this or any idea what it could be? In the past couple of years it has been run almost exclusively on LPG so I'm not sure when the problem started.

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    Expert altech's Avatar
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    Try the timing, get a good balance between both fuels.

    Replace fuel pump as it might be fine , but on it's way out regards Alex
    Last edited by altech; 2nd April 2019 at 03:54 PM.
    97 GU Ti 4.5 on lpg , uhf icom Pro400, Garmin GPS Maps, HD-Lukas Dash Cam with gps tracking. Snorkel , I-Max 12000lb Winch , Twin rear light bracket on wheel carrier for light & uhf antenna,Draws unit, Electric Cargo barrier, HID headlights kit, LED Light Bar, 2 inch lift with HD King springs and Monroe Gas Magnum TDT 4WD Shock Absorbers, BS Dueler 697 Lt 285/75R-16 .

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    Patrol Freak 10G's Avatar
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    I had an AU falcon with dual fuel, in the end the only thing I learnt was that it only ever ran well on one fuel. If you wanted it to run well on the other, I had to retune it for the other.

    When did it last run well on petrol? Has anything changed since then? Could some crap have been picked up from the petrol tank and blocking it in the tank?

    Good luck.
    .. give me land lots of land under starry skies above, don't fence me in ...

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    Expert altech's Avatar
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    Quote Originally Posted by 10G View Post
    I had an AU falcon with dual fuel, in the end the only thing I learnt was that it only ever ran well on one fuel. If you wanted it to run well on the other, I had to retune it for the other.

    When did it last run well on petrol? Has anything changed since then? Could some crap have been picked up from the petrol tank and blocking it in the tank?

    Good luck.
    when I got the fuel pump replaced, when switching one to the other , No change when car driving down the road regards Alex
    Last edited by altech; 2nd April 2019 at 03:55 PM.
    97 GU Ti 4.5 on lpg , uhf icom Pro400, Garmin GPS Maps, HD-Lukas Dash Cam with gps tracking. Snorkel , I-Max 12000lb Winch , Twin rear light bracket on wheel carrier for light & uhf antenna,Draws unit, Electric Cargo barrier, HID headlights kit, LED Light Bar, 2 inch lift with HD King springs and Monroe Gas Magnum TDT 4WD Shock Absorbers, BS Dueler 697 Lt 285/75R-16 .

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