Engine SKODA ROOMSTER 2012 1.G Service Manual

Avoid short distances
Fig. 110
Principle sketch: Fuel consump-
tion in l/100 km at different tem-
peratures
Short distances result in an above-average high fuel consumption. We therefore
recommend avoiding distances of less than 4 km if the engine is cold.
A cold engine consumes the most fuel immediately after the start. Fuel consump-
tion drops to 10 litres/100 km after just 1 kilometre. The consumption stabilises
once the engine and catalytic converter have reached their operating tempera-
ture.
An important factor in this connection is also the ambient temperature. The im-
age » Fig. 110 shows the different levels of fuel consumption after driving a cer-
tain distance at a temperature of +20 °C and a temperature of -10 °C. Your vehicle
has a higher fuel consumption in the winter than in the summer. ÐChecking tyre inflation pressures
Tyres which are correctly inflated save fuel.
Always ensure the tyre inflation pressure is correct. The rolling resistance will be
increased if the tyre filling pressure is too low. This will not only increase fuel con-
sumption but also tyre wear and the driving behaviour will worsen.
Always check the tyre inflation pressure when the tyres are cold. ÐAvoid unnecessary ballast
Transporting ballast costs fuel.
Each kilogramme of weight increases the fuel consumption. It is worth checking
the boot to avoid transporting any unnecessary ballast. It is particularly in town traffic, when one is accelerating quite often, that the ve-
hicle weight will have a significant effect upon the fuel consumption. A rule of
thumb here is that an increase in weight of 100 kilograms will cause an increase
in fuel consumption of about 1 litre/100 kilometres.
At a speed of 100 - 120 km/h, a vehicle fitted with a roof rack cross member with-
out a load will use about 10

% more fuel than normal due to the increased aero-
dynamic drag. Ð Saving electricity
When the engine is running, the alternator generates and supplies electrical pow-
er. If more electrical components of the electrical system are switched on, more
fuel is needed to operate the alternator. We therefore recommend switching off
electrical components if these are no longer required. Ð Environmental compatibility
Environmental protection has played a major role in the design, selection of mate-
rials and manufacture of your new

ŠKODA. Particular emphasis has been placed
on the following points:
Design measures
› Joints designed to be easily detached.
› Simplified disassembly due to the modular structure system.
› Improved purity of different classes of materials.
› Identification of all plastic parts in accordance with VDA Recommendation 260.
› Reduced fuel consumption and exhaust emission CO
2.
› Minimum fuel leakage during accidents.
› Reduced noise.
Choice of materials › Extensive use of recyclable material.
› Air conditioning filled with CFC-free refrigerant.
› No cadmium.
› No asbestos.
› Reduction in the “vaporisation” of plastics.
Manufacture › Solvent-free cavity protection.
› Solvent-free protection of the vehicle for transportation from the production
plant to the customer. £
122 Driving Tips

›
The use of solvent-free adhesives.
› No CFCs used in the production process.
› Without use of mercury.
› Use of water-soluble paints.
Trade-in and recycling of old cars
ŠKODA
meets the requirements of the brand and its products with regard to pro-
tecting the environment and the preserving resources. All new ŠKODA vehicles
can be utilized up to 95 % and always 1)
be returned. In a lot of countries sufficient
trade-in networks have been created, where you can trade-in your vehicle. After
you trade-in your vehicle, you will receive a confirmation stating the recycling in
accordance with environmental regulations. Note
Detailed information about the trade-in and recycling of old cars is available from
a ŠKODA Service Partner. ÐDriving abroad
Introductory information
In certain countries it is also possible that the
ŠKODA Service Partner network is
limited or has not been established yet. This is the reason why procuring certain
spare parts may be somewhat complicated and specialist garages may only be
able to make limited repairs. ŠKODA in the Czech Republic and its importers are
happy to provide information about technical aspects of the vehicle, required
maintenance work and possibilities for getting repairs done. ÐUnleaded petrol
A vehicle fitted with a petrol engine must always be refuelled with unleaded pet-
rol » page 135, Unleaded petrol . Information regarding the locations of filling sta-
tions that offer unleaded petrol is, for example, provided by the automobile asso-
ciations. Ð Headlights
The low beam of your headlights is set asymmetrically. It illuminates the side of
the road on which the vehicle is being driven to a greater extent.
When driving in countries in which the traffic drives on the other side of the road
than in your home country, the asymmetrical low beam may dazzle oncoming
drivers. To prevent oncoming traffic from being dazzled, the headlights must be
adjusted by a

ŠKODA Service Partner. Note
Further information on adjusting the headlights is available from a ŠKODA Service
Partner. Ð Avoiding damage to your vehicle
To prevent damage to your vehicle, pay special attention: › When driving on poorly maintained roads and lanes
› When driving over kerb stones
› When driving up steep ramps
› So that any low-slung parts, such as the spoiler and exhaust, do not touch the
ground and get damaged
This particularly applies to models with a sport suspension and also when your
vehicle is fully laden. Ð1)
Subject to fulfilment of the national legal requirements.
123
Driving and the Environment

Driving through water on the street
Fig. 111
Driving through water
The following must be observed to avoid damage to the vehicle when driving
through bodies of water (e.g. flooded roads):
› Therefore determine the depth of the water before driving through bodies of
water. The water level must fit around the strut on the side member as a maxi-
mum » Fig. 111;
› Do not drive any faster than at a walking speed. At a higher speed, a water
wave can form in front of the vehicle which can cause water to penetrate into
the air induction system of the engine or into other parts of the vehicle;
› Never stop in the water, do not reverse and do not switch the engine off;
› Deactivate the
START-STOP system before driving through water » page 85,
START/STOP. WARNING
■ Driving through water, mud, sludge etc. can reduce the braking power and
extend the braking distance - risk of accident!
■ Avoid abrupt and sudden braking immediately after water crossings.
■ After driving through bodies of water, the brakes must be cleaned and dried
as soon as possible by intermittent braking. Only apply the brakes for the pur-
pose of drying and cleaning the brake discs if the traffic conditions permit this.
Do not place any other road users in jeopardy. CAUTION
■ When driving through bodies of water, parts of the vehicle such as the engine,
gearbox, chassis or electrics can be severely damaged.
■ Oncoming vehicles can generate water waves which can exceed the permissible
water level for your vehicle. ■
Potholes, mud or rocks can be hidden under the water making it difficult or im-
possible to drive through the body of water. ■ Do not drive through salt water. The salt can lead to corrosion. Any vehicle parts
that have come into contact with salt water must be rinsed immediately with
fresh water. Note
After driving through a body of water, we recommend that the vehicle is checked
by a
ŠKODA specialist garage. Ð124
Driving Tips

Towing a trailer
Towing a trailer
Technical requirements
If your vehicle has already been factory-fitted with a towing device or is fitted
with a towing device from ŠKODA Original Accessories, then it meets all of the
technical requirements and national legal provisions for towing a trailer.
On vehicles with a towing device, the ball rod is detachable and is stowed togeth-
er with separate operating instructions in the spare wheel well or in the compart-
ment for the spare wheel within the boot » page 156, Vehicle tool kit.
Your vehicle is fitted with a 13-pin power socket for the electrical connection be-
tween the vehicle and trailer. If the trailer that is to be towed has a 7-pin connec-
tor, you can use a suitable adapter from
ŠKODA Original Accessories.
If a towing device is retrofitted, it must be completed in accordance with the
manufacturer's specifications. Note
If you have any questions, please contact a ŠKODA Service Partner. ÐLoading a trailer
Loading a trailer
The vehicle/trailer combination must be balanced, whereby the maximum permis-
sible drawbar load must be utilised. If the drawbar load is too low, it jeopardises
the performance of the vehicle/trailer combination.
Distribution of the load
Distribute the load in the trailer in such a way that heavy items are located as
close to the axle as possible. Secure the items from slipping.
The distribution of the weight is very poor if your vehicle is unladen and the trail-
er is laden. Maintain a particularly low speed if you cannot avoid driving with this
combination. Tyre pressure
Correct the tyre inflation pressure on your vehicle for a

“full load” » page 149 ,
Service life of tyres.
Trailer load
The permissible trailer load must not be exceeded under any circumstan-
ces » page 176, Technical data .
The trailer loads specified apply only to altitudes up to 1 000 metres above mean
sea level. As the engine output drops at an increasing altitude due to the declin-
ing air pressure and therefore the climbing ability is also reduced, this means that
the maximum permissible towed weight must be reduced by 10 % for every fur-
ther increase of 1 000 m in height. The towed weight comprises the actual weight
of the (loaded) towing vehicle and the (loaded) trailer. Always drive particularly
carefully with the trailer.
The trailer and drawbar load information on the type plate of the towing device
are merely test data for the towing device The vehicle-specific values are detailed
in the vehicle documents. WARNING
■ If the maximum permissible axle and drawbar load and the maximum per-
missible total or towed weight of the vehicle and the trailer are exceeded this
can cause accidents and serious injuries.
■ Slipping loads can significantly affect the stability and safety of the vehicle/
trailer combination, causing accidents and serious injuries. Ð Towing a trailer
Exterior mirrors
You have to have additional exterior mirrors fitted if you are not able to see the
traffic behind the trailer with the standard rear-view mirrors. The national legal
requirements must be observed.
Headlights
The headlight settings must be checked before starting a journey with a coupled
trailer. If necessary, adjust the settings with the headlight beam adjust-
ment » page 39 , Headlight beam adjustment .
Driving speed
For safety reasons, do not drive faster than the maximum permissible speed indi-
cated on the trailer. £
125
Towing a trailer

Immediately reduce your speed as soon as even the slightest swaying of the trail-
er is detected. Never attempt to stop the trailer from “swaying” by accelerating.
Brakes
Apply the brakes in good time! If the trailer is fitted with a trailer brake, apply the
brakes gently at first, then brake firmly. This will avoid brake jolts resulting from
the trailer wheels locking. On downhill sections shift down a gear in good time to
also use the engine as a brake.
Trailer is connected to the anti-theft alarm system.
› If the vehicle is factory-fitted with an anti-theft alarm system and a towing de-
vice.
› If the trailer is electrically connected to the towing vehicle by means of the trail-
er socket.
› If the electrical system of the vehicle and trailer is fully functional.
› If the vehicle is locked with the car key and the anti-theft alarm system is acti-
vated.
When the vehicle is locked, the alarm is activated as soon as the electrical con-
nection to the trailer is interrupted.
Always deactivate the anti-theft alarm system before a trailer is connected/dis-
connected. Otherwise, the anti-theft alarm system could accidentally be trig-
gered » page 30, Anti-theft alarm system .
Engine overheating
If the needle for the coolant temperature gauge moves into the right-hand area
or the red area of the scale, the speed must be reduced immediately. Stop and
switch off the engine if the warning light  in the instrument cluster starts to
flash. Wait a few minutes and check the level of coolant in the coolant expansion
bottle » page 141, Checking the coolant level .
The following guidelines must be observed » page 19, Coolant temperature/cool-
ant level   .
The coolant temperature can be reduced by switching on the heating. WARNING
■ Adapt your speed to the conditions of the road surface and to the traffic sit-
uation.
■ Improper or incorrectly connected electric cables can energise the trailer and
cause functional faults to the vehicle's entire electrical system as well as acci-
dents and severe injuries.
■ Any work on the electrical system must be carried out only by ŠKODA spe-
cialist garages.
■ Never directly connect the trailer's electrical system with the electrical con-
nections for the tail lights or other current sources. CAUTION
■ Avoid abrupt and sudden driving/braking manoeuvres.
■ When the ball rod is removed, the mounting shaft must be sealed with an ap-
propriate cover. This prevents foreign matter from penetrating into the mounting
shaft. See the fitting instructions for the towing device. Note
■ We recommend that you also have your vehicle inspected between service in-
tervals if you tow a trailer frequently. ■ The handbrake on the towing vehicle must be put on when coupling and decou-
pling the trailer.
■ For technical reasons, trailers with rear LED lights cannot be connected to the
anti-theft alarm system. Ð
126 Driving Tips

Wheels
First read and observe the introductory information and safety warn-
ings on page 127.
Wheel rims
Also thoroughly wash the wheel rims when washing the vehicle on a regular ba-
sis. Regularly remove salt and brake abrasion from the wheel rims otherwise the
material will be affected. Damage to the paint layer on the wheel rims must be
touched up immediately.
Light alloy wheels
After washing thoroughly and treat the wheel rims with a protective product for
light alloy wheels. Products which cause abrasion must not be used to treat the
wheel rims. WARNING
Water, ice and grit in the brake system can affect the braking efficiency - risk
of accident! CAUTION
Severe layers of dirt on the wheels can also result in wheel imbalance. This may
show itself in the form of a wheel vibration which is transmitted to the steering
wheel which, in certain circumstances, can cause premature wear of the steering.
This means it is necessary to remove the dirt. Note
We recommend that any repairs to damaged paintwork are carried out by a
ŠKODA Service Partner. ÐUnderbody protection
First read and observe the introductory information and safety warn-
ings on page 127.
The underside of your vehicle is protected for life against chemical and mechani-
cal influences.ä
ä As damage to the
protective layer when driving cannot be ruled out completely,
we recommend that you inspect the protective layer on the underside of your ve-
hicle and on the chassis at specific intervals - preferably at the beginning and end
of the winter.
ŠKODA Service Partners have suitable spray products and the necessary equip-
ment available, and are familiar with the instructions for use. We therefore rec-
ommend that touch-up work or additional corrosion protection measures are car-
ried out by a ŠKODA Service Partner. WARNING
Never use additional underbody protection or anti-corrosion agents for ex-
haust pipes, catalytic converters, diesel particle filters or heat shields. When
the engine reaches its operating temperature, these substances might ignite -
risk of fire! Ð Protection of hollow spaces
First read and observe the introductory information and safety warn-
ings on page 127.
All the cavities of your vehicle which are at risk from corrosion are protected for
life by a layer of protective wax applied in the factory.
This wax protection does not require to be inspected or re-treated. If any small
amount of wax flow out of the cavities at high temperatures, these must be re-
moved with a plastic scraper and the stains cleaned using a petroleum cleaner. WARNING
Safety regulations should be observed when using petroleum cleaner to re-
move wax - risk of fire! Ð
ä
131
Taking care of and cleaning the vehicle

Note
The fuel tank has a capacity of about 55 litres, containing a reserve of approx.
7 litres . ÐUnleaded petrol
First read and observe the introductory information and safety warn-
ings on page 134.
Your vehicle can only be operated with
unleaded fuel
that complies with the
standard EN 228 (in Germany: standard DIN 51626-1 or E10 for unleaded fuel with
an octane rating of 95 RON and 91 RON or DIN 51626-2 or E5 for unleaded fuel
with the octane rating 95 RON and 98 RON).
Prescribed fuel - unleaded fuel 95/91 RON
Use unleaded fuel with the octane rating 95 RON. Unleaded petrol 91 RON can al-
so be used but results in a slight loss in performance.
If, in an emergency, the vehicle has to be refuelled with petrol of a lower octane
number than the one prescribed, the journey must only be continued at medium
engine speeds and a low engine load. Driving at high engine revs or a high engine
load can severely damage the engine! Refuel using petrol of the prescribed oc-
tane number as soon as possible.
Prescribed fuel - unleaded petrol min. 95 RON
Use unleaded fuel with the octane rating 95 RON.
In case of necessity, you can refuel with petrol with the octane rating 91 RON if
petrol with the octane rating 95 RON is not available. The journey must only be
continued at medium engine speeds and a minimum engine load. Driving at high
engine revs or a high engine load can severely damage the engine! Refuel using
petrol of the prescribed octane number as soon as possible.
Even in the event of an emergency, petrol of a lower octane number than 91 RON
must not be used, otherwise the engine can be severely damaged!
Unleaded petrol with higher octane number
Unleaded petrol that has a higher octane number than that required by the en-
gine can be used without limitations.
On vehicles with prescribed unleaded petrol 95/91 RON, the use of petrol with a
higher octane number than 95 RON does not result in a noticeable power in-
crease or a lower fuel consumption.
ä
On vehicles using prescribed unleaded petrol of
min.
95 RON, the use of petrol
with a higher octane number than 95 RON can increase the power and reduce
fuel consumption.
Prescribed fuel - unleaded petrol 98/(95) RON
Use unleaded fuel with the octane rating 98 RON. Unleaded petrol 95 RON can
also be used but results in a slight loss in performance.
In case of necessity, you can refuel with petrol with the octane rating 91 RON of
unleaded fuel with octane rating 98 RON or 95 RON is not available. The journey
must only be continued at medium engine speeds and a minimum engine load.
Driving at high engine revs or a high engine load can severely damage the engine!
Refuel using petrol of the prescribed octane number as soon as possible.
Even in the event of an emergency, petrol of a lower octane number than 91 RON
must not be used, otherwise the engine can be severely damaged!
Fuel additives
Only use unleaded petrol, which complies with the standard EN 228 (in Germany:
standard DIN 51626-1 or E10 for unleaded fuel with an octane rating of 95 RON
and 91 RON or DIN 51626-2 or E5 for unleaded fuel with an octane rating of
95 RON and 98 RON), as these meet all of the requirements for fault-free engine
operation. We therefore recommend that no fuel additives are used. CAUTION
■ All
ŠKODA vehicles with petrol engines must only be operated with unleaded
petrol. Just filling the tank with leaded petrol once will damage the exhaust sys-
tem!
■ Engine parts can be damaged if petrol with a lower octane number than the one
prescribed is used.
■ In no case may fuel additives with metal components be used, especially not
with manganese and iron content.
LRP (lead replacement petrol) fuels with met-
allic components may not be used. There is a risk of causing considerable damage
to parts of the engine or exhaust system!
■ Fuels with metallic content may not be used. There is a risk of causing consider-
able damage to parts of the engine or exhaust system!
■ The use of unsuitable fuel additives can cause considerable damage to parts of
the engine or the exhaust system. Ð
135
Inspecting and replenishing

Diesel fuel
First read and observe the introductory information and safety warn-
ings on page 134.
Your vehicle can only be operated with
diesel fuel, which complies with the
standard EN
590 (standard DIN 51628 in Germany, standard ÖNORM C 1590 in
Austria, GOST R 52368-2005/EN 590:2004 in Russia).
Operation in winter - Winter-grade diesel fuel
In the winter, only use diesel fuel, which complies with the standard EN 590
(standard DIN 51628 in Germany, standard ÖNORM C 1590 in Austria,
GOST R 52368-2005/EN 590:2004 in Russia). “Winter-grade diesel fuel” will still
operate properly even at a temperature of -20 °C.
It is often the case in countries with different climatic conditions that diesel fuels
available have a different temperature characteristic. The ŠKODA Service Partners
and filling stations in the relevant country will be able to provide you with infor-
mation regarding the diesel fuels available.
Preheating fuel
The vehicle is fitted with a fuel filter preheating system. This secures operation of
a vehicle using diesel fuel down to an environmental temperature of -25 °C.
Fuel additives
Fuel additives, so-called “flow improvers” (petrol and similar products) must not
be added to the diesel fuel. CAUTION
■ Just filling the tank once with diesel fuel that does not comply with the stand-
ard, can cause severe damage to parts of the engine, the fuel and exhaust sys-
tem!
■ If a different fuel other than diesel fuel, which complies to the above mentioned
standards (e.g. petrol) is used by mistake do not start the engine or switch on the
ignition! Extensive damage to engine parts can occur! We recommend that the
fuel system is cleaned by a

ŠKODA Service Partner.
■ Water which has collected in the fuel filter can cause engine faults.
■ Your vehicle is not adapted for use of biofuel (RME), therefore this fuel must not
be refuelled and driven. The use of biofuel (RME) can cause considerable damage
to parts of the engine or fuel system. Ð
ä Engine compartment
ä
Introduction
This chapter contains information on the following subjects:
Opening and closing the bonnet 138
Engine compartment overview 138
Checking the engine oil level 139
Replenishing the engine oil 139
Changing engine oil 140
Coolant 140
Checking the coolant level 141
Replenishing the coolant 141
Radiator fan 142
Checking the brake fluid 142
Changing the brake fluid 142
Windscreen washer system 143
There is a risk of injuries, scalding, accidents and fire when working in the en-
gine compartment, e.g. inspecting and replenishing oil and other fluids. For this
reason, it is essential to comply with the warning instructions stated below and
with the general applicable rules of safety. The vehicle's engine compartment is
a hazardous area . WARNING
■ Never open the bonnet if you can see steam or coolant flowing out of the
engine compartment - risk of scalding! Wait until the steam or coolant has
stopped escaping.
■ Turn off the engine and withdraw the ignition key.
■ If the vehicle is fitted with a manual gearbox, move the gearshift lever into
Neutral, or if the vehicle is fitted with an automatic gearbox, move the selec-
tor lever into position P .
■ Firmly apply the handbrake.
■ Allow the engine to cool.
■ For safety reasons, the bonnet must always be properly closed when driving.
This is why after closing the bonnet, the lock must always be checked to en-
sure it has engaged properly. £
136 General Maintenance

WARNING (Continued)
■ If you notice that the lock is not properly engaged while driving, stop the ve-
hicle immediately and close the bonnet - risk of an accident!
■ Keep children clear of the engine compartment.
■ Do not touch any hot engine parts - risk of burns!
■ Never spill fluids on the hot engine. Such fluids (e.g. the antifreeze con-
tained in the coolant) may ignite!
■ Avoid short circuits in the electrical system - particularly on the vehicle's
battery.
■ Never touch the radiator fan while the engine is still warm. The fan might
suddenly start running! ■ Never open the end cover of the coolant expansion reservoir while the en-
gine is still warm. The cooling system is pressurized!
■ When opening the end cover of the coolant expansion reservoir, cover it
with a cloth to protect your face, hands and arms from hot steam or hot cool-
ant.
■ Do not leave any items such as cloths or tools in the engine compartment.
■ If you wish to work under the vehicle, you must secure the vehicle from roll-
ing away and support it with suitable supporting blocks: the car jack is not
sufficient for this - risk of injury!
■ If any inspection work has to be carried out when the engine is running,
there is an additional risk from rotating parts (e.g. V-belt, alternator, radiator
fan) and the high-voltage ignition system. The following must also be ob-
served: ■Never touch the electric wiring on the ignition system.
■ Always make sure that no jewellery, loose clothing or long hair can get
caught in rotating engine parts - hazard! Always remove any jewellery, tie
back long hair and wear tight fitting clothing before completing any work.
■ Additionally, the following warning instructions must be observed if work
has to be carried out on the fuel or electrical system. ■Always disconnect the vehicle battery from the electrical system.
■ Do not smoke.
■ Never work near open flames.
■ Always have a functioning fire extinguisher nearby. CAUTION
■ Always top up using the correct specification of fluids. This may result in major
operating problems and also vehicle damage!
■ Never open the bonnet using the locking lever - danger of causing damage. For the sake of the environment
In view of the environmentally friendly disposal of fluids, the specials tools and
knowledge required for such work, we recommend that fluids are changed by a
Škoda
Service Partner as part of the inspection service. Note
■ If you have any questions regarding the fluids, visit a
ŠKODA Service Partner.
■ Fluids with the correct specifications can be purchased from ŠKODA Original Ac-
cessories. Ð
137
Inspecting and replenishing

Opening and closing the bonnet
Fig. 113
Bonnet/radiator grille release lever: Release lever Fig. 114
Securing the bonnet with the
bonnet support
First read and observe the introductory information and safety warn-
ings on page 136.
Opening
› Pull the release lever under the dash panel 1
» Fig. 113.
Before opening the bonnet, ensure that the arms of the windscreen wipers are
correctly in place against the windscreen otherwise the paintwork could be dam-
aged.
› Press the release lever in the direction of the arrow 2
» Fig. 113 and the bon-
net is unlocked.
› Grab hold of the bonnet and lift.
› Take the bonnet support out of its holder and secure the opened bonnet by in-
serting the end of the support in the opening 3
» Fig. 114 designed for it.
ä Closing
› Lift the bonnet slightly and unhook the bonnet support. Press the bonnet sup-
port into the holder designed to hold it.
› Let the bonnet drop into the lock carrier lock from a height of around 20 cm –
do not push it in .
› Check that the bonnet is closed properly. Ð Engine compartment overview
Fig. 115
1.6 l/77 kW diesel engine
First read and observe the introductory information and safety warn-
ings on page 136.
Coolant expansion reservoir 141
Windscreen washer fluid reservoir 143
Engine oil filler opening 139
Engine oil dipstick 139
Brake fluid reservoir 142
Battery (below a cover) 143
Note
The location of the inspection points in the engine compartment of petrol and
diesel engines is practically identical. Ð
ä 1
2
3
4
5
6
138
General Maintenance