3
FIAT PUNTO NATURAL POWER
INTRODUCTION
The Fiat Punto Natural Power version fea-
tures two fuel systems, one for petrol and
one for natural gas (methane).
The two systems are independent of one
another and the methane one is the
phased, sequential, multipoint type.
The starting system runs on petrol and is
the only one.
What is natural gas?
Natural gas is a mixture of gas used as a
main source of energy.
Its main component is methane so for this
reason it is usually known as methane in
Italy but it contains small amounts of oth-
er hydrocarbons and inert gases.
It is extracted in a gaseous stage and trans-
ported to where it is used via gas pipelines;
world reserves are plentiful and evenly dis-
tributed. Methane is fuel with a low impact
on the environment because it significantly
reduces the contribution of the exhaust
gases to the greenhouse effect and creat-
ing pollution.The methane multipoint injection
system
It is an original product from Fiat’s re-
search in the field of alternative fuels that
comes from close co-operation with im-
portant suppliers in the methane sector.
By adapting the sophisticated electronic
control technology of petrol engines to
meet the specifications of methane, it has
been possible to achieve important results
in terms of driveability, exhaust emissions
and consumption.
Using the methane multipoint injection
system the engine offers the same driving
conditions as running on petrol.
It should be borne in mind that, in all dri-
ving conditions, methane operation gives
engine power and torque specifications
that are 10% lower than petrol operation.
Petrol operation is therefore rec-
ommended if a lot of power is re-
quired (e.g. driving uphill with a
laden car, setting off on a steep in-
cline).
Selecting the type of fuel supply
The Fiat Punto Natural Power version is
configured to normally run on methane.When the methane is running out and the
pressure in the canister is close to the cor-
rect operating limit, the system automat-
ically switches to petrol operation.
The engine is always started up using
petrol (to keep this fuel supply system ef-
ficient) and, if the engine was running on
petrol before being switched off, when it
is started up again switching to methane
operation will need to be requested man-
ually.
For this reason there always needs
to be petrol in the tank.
The petrol/methane switch A-Fig. 1,
amongst the controls in the dashboard,
makes it possible to select petrol opera-
tion. The system does not switch auto-
matically to methane operation if the
petrol runs out.
fig. 1F0M0450m
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13
FIAT PUNTO NATURAL POWER
SCHEDULED SERVICING PLAN
Additional operations to the Servicing Plan in the Owner Handbook.
Thousands of kilometres
Visually inspect the condition of: methane pipes and connectors,
fastening of methane tank, renew if necessary (*)
Check pressure regulator and, if necessary, replace internal filter (*)
Check operation and parameters of fuel supply system using autodiagnostic
socket
Replace filter and bleed excess oil if necessary
Check mechanical tappet clearance and restore if necessary
Check tightening torque of canister fastening bands
Check the position/wear of the windscreen/rearscreen wiper blades
Check condition and wear of front disc brake pads andbrake
pad wear indication (for versions/markets, where provided)
(*) or every 12 months
30 60 90 120 150 180
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15
FIAT PUNTO NATURAL POWER
INTRODUCTION 1.4
Engine identification code 350A1000
CycleOtto
Number of cylinders and position 4 in line
Number of valves per cylinder 2
Piston diameter and stroke mm 72 x 84
Total capacity cm31368
Compression ratio 11.1 ± 0.2
kW
Max power CEE bhp
at a speed of rpm
Nm
Max torque CEE kgm
at a speed of rpm
Spark plugsNGK ZKR7A-10
Fuel
ENGINE
ENGINE CODE - BODYWORK VERSIONS
Engine code Bodywork version
199AXB1A 02M (3 door/4 seater)
1.4350A1000 199AXB1A 02F (3 door/5 seater)
199BXB1A 03E (5 door/5 seater)
51
70
6000
104
10.6
300057
77
6000
115
11.7
3000
MethaneGreen petrol
unleaded 95 RON
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