Hi all, I'm a new member with a question about my AU3 wagon with factory Tickford duel fuel.
I've noticed that the car has started surging when under load (eg uphill 1/4 throttle), but is fine when cruising on steady throttle. Originally thought the auto needed a service, but after some experimenting (runs perfect on petrol), i now realize it is the gas system.
This is what i have found while running on gas so far: Starts & idles perfectly & changes from gas to petrol normally, recently had a couple of backfire stalls at slower speeds once for no reason & once when i went to take off quicker than normal.
Other than the surging under load (gets worse the harder you accelerate), the car is driving normally & seems to be getting the same economy figures.
Thanks in advance for your help.

I suggest you get the GAS system serviced by a professional.
There is a gas computer that talks to the fuel computer and its rather complicated for a novice.
Also any work on a gas system requires a license, the reason for that is if you disconnect anything and you do not reconnect it properly you could get a explosive gas leak.

change the plugs and leads. backfires are caused by ignition problems and I have fixed this a few times myself with new wirewound "gas" leads. my car has done over 356000 on gas no worries with new leads about every 100000 or so.

Just changed the plugs, car's running good again. Thanks for the input!

I should've tried this on my AUI....Crappy gas system i had on it....