Ford Transit 2002 Owner's Manual page 1360

Fuel System - General Information - 1.8L
Duratec-DOHC (85kW/115PS) - Zetec,
Liquefied Petroleum Gas (LPG) - Fuel
System
Description and Operation
This bi-fuel vehicle runs on either petrol or Liquefied Petroleum Gas (LPG) and will always
start on petrol. The LPG system can be manually selected and deselected using the LPG
select switch which is located in the centre console. If a weak air/fuel mixture has been
detected, or if the LPG fuel tank runs dry, the engine will revert to petrol operation. The
LPG system operates by injecting LPG in dry gas form through the fuel injection supply
manifold to the injectors which are located on the outside of the intake manifold. When the
vehicle is operating on LPG the petrol system is disabled.
LPG Leak Test
There are two methods that are used to identify leaks in the fuel system:
Electronic leak detector
Liquid leak test
Electronic Leak Detector
This type of equipment is very sensitive to the presence of any hydrocarbons, which may
give misleading results. If the electronic leak detector indicates a leak, verify the results
with a liquid leak test.
Liquid Leak Test
After applying the liquid to the LPG system, the suspected area must be watched very
closely. If bubbles begin to expand from an area, a leak has been detected.
Transit/Tourneo Connect 2002.5 (06/2002-)
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