My dual fuel AU '99 runs well on LPG or petrol, but the exhaust really, really stinks when running on petrol. Stop at the lights and if the driver's window is open the exhaust smell comes in or when engine running and unloading from the boot the smell almost knocks you out.
Plugs are sooty and high tension leads are new as well as fuel filter near the rear wheel arch. O2 sensor replaced about 8 months ago. AU has about 136,000 Km.
Do I look at changing the regulator and injectors? I don't know if the
ECU will give codes for this model. What is the cheapest reader for this?