engine VOLKSWAGEN GOLF 2007 Repair Manual

Tips
Remember to refuel w hen the tank is 1/4 full to reduce the risk of running out of fuel, es pecially in remote areas.
Applies to vehicles: with a gas oline engine
The correct gasoline grades are listed on a sticker inside the fuel filler flap.
rating
Oc tane caused by pre-i g­
n it ion . Th ere fore, buying th e correct grade of gasoline is very important to help prevent pos­sibl e engine damage and a loss of engine perfor­mance.
The recommended gasoline octane ra ting for
your e n g in e can be found on a label lo cated on the in sid e o f the fuel flap. This ratin g m ay be specified as (CLC) or
Grade: 91-96 AKI
Regular Grade: 87-90
Canada, a nd in most European countries.
We recommend that you do not take your ve­
hicl e to areas or countries where unleaded gaso­line may not be available.
Gasoline containing alcohol or MTBE
You may us e unleaded gasoline blended withal­cohol or MTBE (methyl tertiary butyl ether; commonly re fe rr ed to as oxygenates) if the
b lende d mi xture meets th e following criteria:
B
lend of gasoline methanol (wood alcoho l or methyl a lcohol):
A nti -knoc k ind ex must be 87 or higher,
meth­anol.
An ti-k nock index must b e 87 or higher,
Blend must not contain mor e t ha n eth­anol.
Blend of gasoline and MTBE:
Anti-knock ind ex must be 87 or high er,
Blend must conta in not more than 15%
MTBE .
Seasonally adjusted gasoline
Many gasolines are blended t o perform espe­cially well for winter or summe r driv in g. During
seasonal change -over, we sugges t th at you fill up
at busy gas stations where th e seasonal adjust­ment is more like ly to be made in time.
Note
Do not use a ny fu el with octane lower than 87 or 91
Do not use leaded gasoline! U sin g leaded gasoline will seve re ly damage your vehicle's cat­alyt ic conver te r and its ab ility to reduce exhaust emissions.
Methanol fuels that do not meet these re ­quirements may cause corrosion and damage to plast ic and rubbe r component s in the fuel
sys tem.
Do not use fuels that fail to meet the c rit eria specified above .
and 37

you are unable to determine whether or not a particular fuel blend meets the tions above, ask your service station or its fu el
s uppli er.
Do not use fuel for which the contents cannot be identifi ed.
F uel syste m damage and performance lems result ing from the use of fu els different
from those specified above are not the b ili ty of Volkswagen and are not covered under the New Vehicle or the Emi ssio n
Fo r the sake of environment
Just one tank f ull of leaded gas will seriou sly duce th e efficiency of the catalytic co nve rter.
you notice a lo ss of fuel economy or ability and performance problems using one of these fuel blends, we recommend th a t yo u
switc h to unblended
Gasoline additives improve the quality of the gasoline.
Gasolin e qualit y influences engine behavior, ficie ncy, performance and service life. For this
reason you should always use good quality line containin g additives. These additi ves will
h elp to prev ent corrosion, keep the fuel system clean and pre vent deposit s from building up in
the engine.
good quality gasolin e with additives is not availab le, or if eng in e probl em s arise, additives may be added to the gaso lin e.
38 Checking and
will also receive information on t o use them.
Do

Booklet 3.2 Tips and Advice
be taken working on
(Automatic tran smissio n).
2. Apply th e parkin g brake firmly.
3. off the eng in e and remove the
k
ey f rom the ignition.
4. Wail
for the engine to cool down.
5. Keep chi ldren and othe rs away from the
ve hicle .
6.
the e ngin e hood.
All serv ice fluids. sp ark plugs . batteri es etc. are
constantly being develo ped and improved. kept up-to-da te
by the manufactur er. For thi s reaso n mend that you have these replaced by an rized Volkswage n dealer. A lways read the notes
b elow . Th e e ngin e or any motor vehicle is a hazardous
WARNING
E ngine
fo rni a cause cancer and birth defec ts and reproduc tive harm. In additio n, certain fluid s
containe d in vehicl es and cerlain products of component wea r co ntain or emit ch e m ica ls
kn ow n to th e to ca use
ca ncer a nd birth defect s o r o th er r eproductive
h arm.
Ba ttery pos ts,
th e of to
(continued)
cause ca ncer and reproductive harm. hands after handling.
WARNING
T he e ng in e comparlmenl of any m olo rvc hicl c
is a polcnli ally dangero us area ca n ca use seriou s pe rso nal inju ry.
Alwa ys use extreme ca ution when doin g
any work in he e ng in e compartment. Always
follow commonl y acce pled p rac tice s and usc common se nse. Neve r risk perso nal
injury.
Never perform any work in the e ng in e
compartment unless you know exactl y how to
ca rry ou t th e job
ni cal info rm ation and th e correcltools ! you arc uncerla in w hat to have the wo rk
p erformed by an aulhorized Volkswage n
d ealer or works hop. Se rious
form ed work.
Neve r o pe n the engine hood if you see stea m or coola nl escap in g fro m the en g in e comparrment. I-Iots team orcoolanl ca n cause serious burns. Alw ays wait until yo u no longe r sec or hear stea m or coolant escap ing fro m the engine.
Alwa ys le t th e en g in e cool do wn pl ete ly before care full y opening the engine
h ood. I-lo t compone nt s will burn sk in on tacl.
th e e ng in e has coo le d down and you
selecto r mati c transmi ssio n).
- Rem ove th e k
ey from the ign ition.
- K
eep children and others away from

WARNING (continued)
Never reach into the area around or tou ch the radiator fan. Contact w ith the blade s can resuh in se riou s personal injury. Always m ember that the radiator fan is controll ed and can turn on
m oved from the ignit ion.
Never unscrew the coolant expa nsio n tank cap when th e engin e is hot. A hot engine will heat the coo la nt and put it under pressure . mov in g a cap that i s under pressure ca n rcsuh in seriou s personal injury and/or burns.
A lway s prote ct face, hand s and arms from hot esca ping coolant or steam b y cove ring the ca p with a large, thick rag.
Turn the cap slow ly a nd very carefully in a
counter- clo ckw ise direction whil e applying
light downward pressure on the top of the cap.
Never spill on hot engine parts o r hot
e xhau st sys te m . S pilled
Neve r short-circuitthc elec trica l sys te m ,
es peciall y w here th e jumper cabl es are tached -th e balleri es could explode!
Neve r leave any objects in the e ngine partment, for exam ple cleaning rag s and too ls. Objects
Neve r work unde r the veh ic le unless you
h ave safely secured th e ve hicl e from movin g.
I f yo u must work under th e ve hicl e wit h th e
w hee ls on th e ground, always make sure the vehicl e is on leve l ground, th e wh eels arc
b locked from movin g and th e key is not in the
ignition.
Always support your ve hicle with safety
s tands if you have to wo rk underneath it. The
ja ck suppli ed with the ve hicle is not s tron g enough for this purpose and can co llap se causin g se riou s personal injury.
If you have to perform a check or r ep a ir
w hen th e e ngine is running, there arc more
ri sks from
the ro tating parts, such as the drive
WARNING (con tinued)
Neve r to uch the e lec tr ica l w ir in g of the ig ni tio n sys tem.
Always make sure that j ewe lry, loose clothing and lo ng hair do not get caught in
rota ting engine pans. Before startin g any work remove jewelry, tie back and cover
hair, and do not wear clothing that can hang down and get caught in mov ing gin e parts.
Always use extre me cauti on if the erator pedal has to be depresse d to perform
a ch eck. The vehicle could move suddenly, eve n if the parking brake is applied.
If wor k on the fu el sys te m or th e electrica l
syste m is necessa ry:
Always discon nect th e balleries. Make
sure th e vehicle is unlo cked when
Neve r sm oke .
Neve r work nea r heaters, wa te r h eaters of other open names .
A lways have an approve d fire ext guis her nearby.
To avo id electrical shock and personal jury w hil e the eng ine is running or being
s tarted :
n ever touch ignition cables,
never to uch othe r component s of the
high vohage electronic ignition syste m,
never touch the gas discharged (Xeno n) headlights wiring.
Note
Whe n chang ing or topp ing orr service fluids. make absolutel y ce rtain that you fill the fluid s
into the corr ect reservoirs. Using incorrec t fluids will resuh in serious malf unct ions and engine
damage!
For the sake of environment
Service fluid leaks are harmful to the environ-
ment. Reg ularl y check the ground undernea th
your vehicle . you find spots of oil or other
fluids. have your vehic le checked by your rized dealer or a qualified

Booklet 3.2 Tips and Advice
th e release lever for
the engine hood is located in the on the
d rive r side
Befor e you open the engine hood, make
sure that the w indshi eld wiper arms are
folded-up against the winds hi eld so that
the hood will not be damaged when the
hood is opened.
fig . 4 . The engi ne hood is released
from its latch by a s
pring mechanism
Lift the engin e hood up at the re lease
fig. 5(arrow) and open the hood
until it is held up by the gas-filled strut.
Fig . 5 Detail of the radiator release lever open ing the en gine hood
Warning engine hood
With the ignition on, the warnin g light indicate s
that the engine hood is open. The warning light must out when the engine hood is closed (to the second latch ).
If there is a displa y
in the cluster, it is visible even
when the ignit io n is not switched on. After the
vehicle has been locked, the disp lay must go out after about 15 seconds .
WARNING
Before working in lhe engine compart­ment, always read and heed all WARNINGS 39. The engine compartment of any motor vehicl e is a potentially dangerous area and can cause se riou s personal injury.

the engine hood down th e
pressure fro m the strut is reduced.
- Then the en g in e hood
in
If the engine hood does not close properly, open
it agai n and close it properly. the engi ne
hood i s yo u can sec that it fits with the other body pans.
Engine
If the en gin e hood is not closed prope rly, it could up and block your while driv ing cau sing a crash and serious person a l injuries.
Afte r closing the engine hood, always
c heck that the latch has properly gaged. The engine hood must be with the
surrounding body p a rts.
If you ever n otice that the engin e hood latch is not properl y secured w he n the vehicl e
i s mov in g, stop at once and close it.
Neve r le t anyone get in the way of the gine hood when clos in g
Th e engine oil use d co nform to exact specifications.
en g in e was with an meets
can usc thi s oil over all ature ranges for normal driving.
If you need to add between oil changes, use only a hi gh synt hetic-based oil w ith rect specificatio ns that express ly complies with oil qua li ty standard gine oil v iscosity grade is able. yo u can also use as long as it meets oil quality standard
arc synthetic engine oils. This does no t mean, however, that every synthetic engine oil will meet
and
always be sure that yo u u se an
th e term s must appear o n the oil container si ngly o r
in combination w ith other designations:
Gasoline engine
General recommendations
or

Engine
ternal combustion engines use a certain amount of oil.
th e break-in period,
when consumption has sta bili zed.
conditions, t he rate of
as its viscosity, th e
residue and by the oxidation level of the oil. As engines consumption may
increase over time
of thes e it is not rate of sumption. For reaso n, w e urge you to check the oil le vel in your engin e at regular interval s, prefe ra bl y every time yo u and always
fore go ing o n a trip.
The
en gine
pressure is too low. S to p the en gine ately, check th e en g in e o il leve l and add if
n ecessary . If th e e ng ine oil level is no rmal, but
th e light con tinues to flash, do not continue to
o pera te t he ve hicl e. Engine damage
so that th e cause of your concern can be pro perly
ment of consumpt ion requires great care and may take sometime. consumption
Sto p! Be fore workin g in the e ngine ment, always read an d heed all WARN INGS 39. The e ng in e compart m en t of any moto r ve hic le is a potentially dangero us a rea and can cause serious pe rsonal inju ry.
0Note
The eng ine in you r to all of it s movin g pa rts. fore th e en g in e must be ch ecked and kept at th e required
Make it a habit to have the engine
Lack of engine
and

The engine oil dipstick indicates the leve l of the oil.
Fig. 6 E ngine level marks
To get a true reading, the ve hicl e must be
on leve l ground. Before opening the en­
gine hood, always read and heed all
page 39.
If the yellow indicator light in th e in-
s
trument cluster comes on, check the e n­
gine o
il leve l as soon as possible and add
the correct engin e oil.
the eng in e and wait a few minutes
for
the oil to return to the o il pan.
p a ge 41.
out the dipstic k and w ip e it clean
w ith a rag.
Rein se rt dips tick; push it all the way in.
If
ther e is a projection on the en gin e oi l
dipstick, make sure it lines up with the pro­
jection on the guide tube.
the dipsti ck out aga in and ch eck
the o il l evel.
You must not add fig. 6 .
You can add
You m ust add oil. adding oil, make sure the level is somewhere within t h e B range.
Warning light : Engin e oi l level too low
If the yellow warn in g ligh t in the instrument cluster comes on, switc h ofT the engine and check the engine level as soon as possible and add the correct page 45. There may be a message in the instrumem cluste r informing you or advis ing you of the necessary action to
take.
If the yello w
warning ligh t flashes, contact your authorized Volkswa gen dealer or qualified workshop and have the oil leve l sensor checked. There be
WARN IN G
Before workin g in th e e ng in e compart­m ent, always read and heed 39. T he engin e compartment of any motor vehicl e is potentiall y dangerous are a and can cause serio us personal injury.
WARN ING
If you do not pay attentio n to the warning light s which ha ve com e o n, incl ud in g the warning messages appearing in the d isplay, this could lead t o personal in juryordamage to
your ve hicle.
Note
If the engine oil is above level not
start the engine-this could damage the catal ytic converter and the engi ne!

Tips
6 shows the oi l stick. Depending on the model, your dipstick
Booklet 3.2 Tips and Advice
may look different or have a different colo r from
t h e one shown in th e illustration. The markin gs on the dipstick are th e same for
Warning
This warning symbol indicates that the engine oil pressure is too low.
th is warning light start s to nash, and three warnings sound. switch off the engine and check the oil level. Top off with engine oil if necess ary
essary action to tak e.
If
the warning flas hes even the
oil le ve l is correct, do no/drive on. Do not ler the engine idle. Contact an authorized Volkswagen dealer or a qualified works hop.
Adding engine
WARNING
If yo u ignore the illum inated warning light and the accompanying texts and warning messages, injuries or vehicle damage may s ult.
Tips
The oil pressure warning symbol i s not an oil
level gauge. Check the oil leve l regu larly,
Top off gradually with small amounts of
Fig. 7
must b e
on leve l ground. Before opening the
WAHNINGS 39.
Turn off the e ngin e.
Un screw the oil fig. 7 from the
cy lind er head cover. see the can
symbol on to p of the oil cap. If you a re not
sure, con tact your authorized
off oil in amounts (not more
than a hal f quart/liter at a time). using the
correct oil that expressly complies with
quality standard
page42.
too much
As soon as the oil l evel is in area
d ipstick all
the way. Othetw ise oil could
and Filling 45

3.3
additives
Volkswagen
does not recommend the use of oil additives. They may adversel y affec t your New Vehicl e
Befor e worki ng in the engine compart­
m ent, a lw ays read and heed all
Spilled oil is a fire hazard.
Changing the engine oil
(continued)
The oil filler cap must b e properly secured
to prevent oil from being sprayed o n the hot e ngine and exhaust system w hen the engin e is running.
th e oil is above pag e 44, fig. 6 do not start t he engine-thi s c ould damage the cata lytic convert er a nd the en g ine! a n au ­
t h orized Volkswage n dealer or a qualified work­
s hop.
Fo r the sake of environment
Do not the oil leve l ge t above Other­
wise oil can be drawn in throu gh the cra nkcase breather and escape in to the atmosp he re
throug h the exhaust system.
Th e engine oil must be changed at the interuals listed in the Maintenanc e Booklet .
The engine oil must b e changed according to the int erv a ls s pecified in your Maintenance booklet book le t 1.1.
Thi s is ve ry important beca use th e lubricatin g
prop ertie s of oil decreas e gra dually during
n ormal ve hicl e use . yo u arc not sure w hen you
hav e yo ur oil changed , ask your authorized Volk­swagen Service A dvisor.
Und er
som e c irc um sta nc es the engin e oil
shoul d b e changed more frequently. more often if yo u drive mostly short distances. ope ra te the ve hicle in dusty area s or mostly under s top -and-go traffic conditi ons, or w hen
yo u use vehicle where stay
below fre e zin g point for long period s.
D eterg e
nt addit ive s in the oil will make fr es h oil
look dar k after the engine has been running for a short tim e. This is norm al and is not a reaso n to
c h a nge the oil more often than recommend ed .
46 Checking and
Before working in the engine compart­
m ent, alway s read and heed a ll
yo u must chan ge the en gin e oil in your ve ­
hicl e:
Alwa ys wear eye protectio n.
To reduce the riskofburns from ho t engine
oil l e t the e ngine cool down to the to u ch.
W hen r emoving the oil dra in plu g with your fin gers, stay as far away as possibl e. Al­
ways keep your forearm paralle l to the ground to help prevent hot oil from running down your arm.
Dra in the oil into a containe r designed for this purpose, one large enough to ho ld at least the tota l amount of oil in your engine.
To reduce the risk of poisoning, n e ver u se
empty food or beverage containe rs that might mis lead someon e into drinking from th em .