Prins VSI CNG, Installation Manual

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Maintenance instructions
When you drive on LPG/CNG, maintaining your car is even more important than when using petrol. Since the
specifications of LPG/CNG differ from those of petrol, minor engine problems which won't disturb the driving
comfort while using petrol, may cause major problems while using CNG. Follow the maintenance instructions in
order to use LPG/CNG without any problem.

General maintenance to the car regarding spark plugs, spark plug cables, ignition circuit, valves, etc., has
to be carried out according to the instructions of the car manufacturer.

Proof of maintenance according to the guidelines of the importer is obligatory (completely filled in
maintenance booklet).

Maintenance has to be carried out by a dealer authorised by the importer.

Adjustments and repairs on your Prins VSI- system should only be carried out by a dealer authorised by
Prins Autogassystemen B.V.
MAINTENANCE AND SERVICE
Registration of maintenance and service of the VSI-LPG system.
25.000 km
or after 2 years
100.000 km
or after 2 years
175.000 km
or after 2 years
250.000 km
or after 2 years
Checklist executed services:
Lock off valve filter replacement*
Filter unit filter replacement*
Hoses + filling hoses checked
Fastening of components checked
Electrical conn wiring checked
Checked for fuel leakage
Checked for trouble codes (petrol and
LPG) + system pressure
Checked for exhaust emissions
Tightening torque of the allen screws
of the reducer checked at 8Nm
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Number of kilometres:
Date: Number of
kilometres:
Date: Number of
kilometres:
Date: Number of
kilometres:
Date:
*The service intervals of the filter replacements may be divergent because of the variable LPG quality. Ask your Prins dealer for more
information.