How to tune your LPG engine.
There is lot of confusion and petrol mechanics do not have slightest idea what LPG is about. Hence, it is advisable to learn to tune the LPG engine on your own to save harassment by untrained mechanics.
The focus is on three screws: 1) The larger screw with spring(screw A) that is on side of the reducer(vaporizer), 2) very small screw(screw B) on flat surface of reducer, and 3) a big screw(screw C) on the gas inlet pipe that goes to reducer.
First open fully all the three screws and start the car with acceleration. If you cannot start, then screw halfway all three screws and try to start. If you cannot, close the screw A fully and then open just by one turn. Start the engine with acceleration, try unscrewing this screw till you can start. After starting, start adjusting the screw B to get best idling. Adjust the screw C for the amount of gas you wish to allow for better mileage or for better power. Run the car for about a kilometer and judge what better can be done.
Sometimes, you need to set all three screws again after getting the optimum power for best idling. Try the idling setting without air-conditioning, and then see what is the situation with AC. With AC the idling will increase. Choose the best setting to suite both.
It is advisable to set LPG tuning without AC, as increased idling with AC will not harm the engine, but lower idling will.
To judge the best idling, first hear the engine on petrol, then immediately switch to LPG and hear the engine. The sound should have similarity to get nearest setting on LPG.
Easy, isn’t it?