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LPG Conversion CHOOSING AN LPG CONVERSION Questions to ask when choosing an LPG conversion for your vehicle.
Are you LPGA Approved? An LPGA Approved Installer Scheme member assure that you will get the right conversion for the UK standard.
This is the way in which you can be assured of avoiding a dangerous or poor conversion.
Beware of companies who say they are
“approved” – many may only be approved by their equipment supplier but not be part of the LPGA Approved Installer Scheme :-
• check our Name on the list of LPGA Approved Installers clicking on the link on the right hand side LPGA Membership at page 14 3/4 of the page down
• on visiting the company’s premises ask to be shown the LPGA Logo and an example of the LPG Conversion Certificate that you will be provided with on completion of the work (this is very important for insurance purposes).
Is the equipment you fit supplied direct from the manufacturer or an agent
authorised by the manufacturer to supply to the UK? This is important to ensure that the full equipment manufacturer’s warranty is valid (this could provide you with cover if the installer ceases trading) and that technical support is available to the installer for solving any problems.
Beware of companies who obtain equipment from non authorised sources – these can often also be out of
date or inappropriate or even illegal for the UK market.
What make of equipment will you fit to my vehicle? As with vehicle manufacturers, there are many different manufacturers of lpg conversion equipment and
most installers specialise in one or a small number of makes.
The association does not undertake assessments of LPG conversion equipment but in Scotland grants were
available based on the make of equipment to be installed.
Makes which were assessed and approved were:
AG, BRC, Landi, Necam, OMVL, Prins, Bigas, Romano and Tartarini.
Have you converted my specific vehicle model before? This is a conversion to your vehicle and experience of your particular model will ensure that the conversion will work properly and achieve reduced emissions.
What type of system will you fit to my car? The majority of installations involve:
• An LPG fuel tank and valves:
These must be ECE67/01 approved and stamped to this effect. By law a pressure relief valve must be fitted.
Virtually all filling stations in the UK use the “bayonet” filling gun and this type of filler should be fitted to your vehicle so that filling can be undertaken without an adaptor. Adaptors can cause leaks, burns to the skin and in the worse of the case can snap off creating problems to you your vehicle and the filling station.
• A “regulator” to convert the liquid gas to a vapour:
This must be ECE67/01 approved and stamped to this effect
• The means of injecting the vapour into the engine (mixer or injection)
Single point mixer: The simplest and cheapest system and is only suitable for older vehicles.
If your vehicle has a catalytic converter then it must have an additional system to control the
LPG mixture otherwise the catalytic converter is likely to be damaged. Most such systems
use a link to the lambda sensor and are known as “closed loop”.
Single point mixer systems can cause backfire “explosions” and the installer should be
questioned on the appropriateness of such a system for your vehicle.
Beware such systems should not be fitted if your vehicle has a plastic inlet manifold.
Multi-point injection: Injects the gas close to each cylinder inlet. This avoids the build up of gas in the inlet system
and prevents the backfire ”explosions”
Generally these systems provide better control of the amount of gas for the engine and
hence smoother, more economical running and less emissions.
Multi-point sequential injection The most sophisticated type of installation which provide detailed control of the gas for
maximum smoothness, economy and performance.
What mileage range can I expect from the tank that you will fit? Ensure that the tank being fitted is big enough for your requirements.
What Warranty will I receive? You should expect at least 12 months / 10,000 miles labour and parts warranty on the conversion
equipment.
If your vehicle has a manufacturers warranty applying then this will almost certainly be affected by the conversion. Vehicle manufacturers can only void their warranty in respect of the parts affected by the conversion and LPGA Approved Installers can provide additional warranties to cover these areas.
Establish with the installer the cover that he will provide and whether it is included in the price quoted.
Will my insurance company accept certificates from the Installer? When you have chosen the installer to use, but before you agree to have the work carried out, check with your insurance company.