Technical guidance for a better performance of

L.P.  Gas as a fuel


Before installing a body of LP Gas carburetion it is necessary to know the overall:  Model, displacement, cylinder capacity, etc.. 

Before installing equipment to LPG carburetion it is important and it is vital that the following points are checked: 

1. Tuning up the engine

No change, no repair nor cleaning. Change spark plugs. 

Spark plugs should be changed because the electrodes are rounded to the use, wear or burn the edges. They should be square and perfect, if not the voltage requirement increases. The Gas L.P. needs all voltage to function properly, as already mentioned, one fail in the system voltage can cause false explotions and too much internal heat  which is very dangerous. 

I recommend using a calibration of 0.028'' on a standard ignition system and 0.035'' in electronic ignition. 


Heat range in spark plugs:

The technician´s criteria  must determine the use of the type of spark plug needed, depending on vehicle use, for example. 

In older engines, a spark plug must work hot enough to maintain the voltage requirements at a minimum. 

It is needed a cold working  spark plug to prevent re-ignition or explosion. 

It is recommended to use cold range spark plugs for Gas L.P.  because is known that they have no effect in terms of dirt. 
Often this kind of spark plugs work in very cold ranges that voltage requirements are higher. 
With this type of spark plugs, even the ignition system can present failures in a few miles because of the rust  forming on the electrodes. 

If  the effects or system failures are not present, is convenient to use this type of spark plug for LP Gas 

As you can summarize, there is no parameter by which to decide the type of spark plugs.

2. Resistance change in electronic ignition engines (ceramics). 


3. Change points and condenser. In standard ignition. 


4. Overtaking Vehicle time from three to four degrees for optimal performance. 


If timing in the vehicle is overdue, there will be destructive effects against explosions over de valves . This effect also will be noticed in poor performance and loss of horsepower.

If the engine is generating explosion in cold,  release the distributor and accelerate to ¼ , if vehicle works forced and with complications,  move the distributor until the engine starts to react. Tighten and check the time. It should not be too forward because the operation is reciprocal and can cause explosions .

5. Cleaner filter

The carburizing equipment has this type of filter. This filter has to be used very carefully, because one dirty filter o clogged  enriches the mixture resulting a vehicle with the constant smell of gas and presenting a reduction in power and performance up to 45%. The filter should be cleaned more often than a gasoline one.

6. Spark plugs cables

When the equipment is installed check if there isn´t a energy jump using a screwdriver  to ground and touching the spark plug connector. If there is an energy jump, don´t repair the spark plug wires, replace them.

Wires with silicon cover and IRS type are recommended  to avoid interference with waves of radio and television.  The adjustment has to be very careful and the cable installation to avoid  burning.

7. Ignition coil

To recognize whether a coil is in good condition, start the engine and unplug the coil wire that goes to the distributor and place it where there is good ground.  See the color of the spark. If it´s blue is good. If it´s yellowish or reddish is in bad conditions. Orange is useless for LP gas in neutral to prevent fire.

Also if an alternator is set too low in voltage, or if the primary resistance in the inlet side of the coil has much resistance the voltage will drop down  and consequently the secondary resistance will suffer terribly.  Changing the coil will not solve the problem.

8.  Terminal cables and battery Amperage

They have a great contribution of amperage therefore this must be in excellent conditions to start the engine in all types of weather. 

The previous generate  economic investment but if this previous points are  ignored there could be in result dangerous false explosions.

Fake explosion happen when: 

When there is compression in the flame and it burns the unburned load  to the point of spontaneous combustion. 

The effects may be overheating of the machine, broken spark plugs, spark jump cables, rich blend of LP Gas,  overdue machine timing, flamed platinums, etc.

In these extreme situations the pistons will break, the cylinders will burst or the cylinder heads will be broken. Sometimes much heat is generated by the explosion  that the piston is melted.