the car runs on gas and petrol, it usaully does it more on a full tank of gas. When you start it on gas it runs like **** and if you click it over to petrol for half a kilometer and back over, its fine.
Its feels and sounds like it runs on 5 cyl. once its switched back from petrol it will run all day without stopping just fine, its only when starting ????

anyone had this prob or know what it is???
any help would be appreciated.

arent you supposed to start dual fuel cars on petrol for like 5 minutes before switching to gas or you risk doing bulk damage to your engine?

anyone had this prob or know what it is???
any help would be appreciated.

It's all in the tuning.

Needs to be checked by a LPG friendly mechanic.