2004 PORSCHE 911 GT3 service

Emission ControlSystem

In the interest ofclean air
Pollution ofour environment hasbecome aprob-
lem that isof increasing concerntoall ofus. We
urge youtojoin us
in
our efforts forcleaner airin
controlling thepollutants emittedfromtheauto-
mobile.
Porsche hasdeveloped anemission controlsys-
tem that controls orreduces thosepartsofthe
emission thatcanbeharmful toour environment.
Your Porsche isequipped withsuch asystem.
Porsche warrants theEmission ControlSystem in
your newcarunder theterms andconditions set
forth inthe Warranty Booklet.
You, asthe owner ofthe vehicle, havethe
responsibility toprovide regularmaintenance ser-
vice forthe vehicle andtokeep arecord ofall
maintenance workperformed. Tofacilitate record
keeping, havetheservice performed byautho-
rized Porsche dealers.TheyhavePorsche trained
technicians andspecial toolstoprovide fastand
efficient service.
Maintenance, CarCare
To
assure efficient operation ofthe Emission
Control System:

~ Have yourvehicle maintained properlyandin
accordance withtherecommendations de-
scribed inyour Maintenance Booklet.
Lack ofproper maintenance, aswell asim-
proper useofthe vehicle, willimpair thefunc-
tion ofthe emission controlsystem andcould
lead todamage.
~ Donot alter orremove anycomponent ofthe
emission controlsystem.
~ Donot alter orremove anydevice, suchas
heat shields, switches, ignitionwires,valves,
etc., which aredesigned toprotect yourvehi-
cle's emission controlsystem.
In addition toserious enginedamage, thiscan
result inafire
if
excess rawfuel reaches the
exhaust system.
~ Donot continue tooperate yourvehicle ifyou
detect engine misfireorother unusual operat-
ing conditions. Parking

A
Warning!
Danger offire.

~ Donot park oroperate thevehicle inareas
where thehotexhaust systemmaycome in
contact withdrygrass, brush,fuelspill oroth-
er flammable material.

~ If
your carcatches onfire forany reason, call
the fire department.
Do not endanger yourlifebyattempting toput
out the fire.
Undercoating

A
Warning!
Danger offire and serious personal injuries.

~ Donot apply additional undercoating orrust-
proofing onornear theexhaust manifold,
exhaust pipes,catalytic converters orheat
shields. Duringdriving thesubstance usedfor
undercoating couldoverheat andignite.

AirFilter

A dirty airfilter notonly reduces engineperfor-
mance, butcan lead topremature enginewear.
Regular filterreplacement ispart ofthe routine
maintenance service.

[>
Industy conditions, checkthefilter element
more frequently andreplace ifnecessary.

Particle Filter

The fresh airpassing through theparticle filterinto
the passenger compartment isvirtually freeof
dust andpollen.

[>
Ifthe outside airispolluted byexhaust fumes,
press thecirculating-air button.
A dirty filter canbethe cause ofreduced airflow:

[>
Have filterreplaced byyour authorized
Porsche dealer.
Regular filterreplacement ispart ofthe routine
maintenance service.
Maintenance, CarCare
Manual
Transmission Oil

The transmission oilhas tobe checked and
changed atthe intervals listedinyour Maintenance
Schedule.

[>
Please observe thechapter "CAPACITIES" on
Page 185.
We recommend thatyouhave thetransmission oil
changed atyour Porsche dealer,whohasthere-
quired lubricants andthenecessary fillingequip-
ment.
If you suspect anoilleak inthe transmission, have
your authorized Porschedealercheckitout imme-
diately.

PracticalTIps,Emergency Service

Caution 140
Tires;Wheels 141
Lifting theVehicle 148
Flat Tire 149
Wheel Bolts 150
Electrical System 152
Battery , ,155
Emergency StartingwithJumper Cables 160
Lights, Replacing Bulbs 162
Headlights , "164
Adjusting Headlights 175
Towing 177
Practical Tips,Emergency Service

Exercise ExtremeCautionwhen
Working onyour Vehicle

A
Warning!
Ignoring thefollowing instructions may
cause serious personal injury.

I>
The engine compartment ofany motor vehicle
is apotentially hazardous area.Ifyou arenot
fully familiar withproper repairprocedures, do
not attempt theadjustments describedonthe
following pages.
This caution appliestothe entire vehicle.

I>
Only work onyour vehicle outdoors orinawell
ventilated area.

I>
Ensure thatthere arenoopen flames inthe
area ofyour vehicle atany time when fuel
fumes mightbepresent. Beespecially cau-
tious ofsuch devices suchashot water heat-
ers which igniteaflame intermittently.

I>
Before working onany part inthe engine com-
partment, turntheengine offand letitcool
down sufficiently. Hotengine compartment
components canburn skinoncontact.

I>
Bealert andcautious aroundengineatall
times whiletheengine isrunning.
If work hastobe performed withtheengine
running, alwayssetthe parking brake,and
make suretheshift lever isin neutral position.

140
PracticalTips,Emergency Service
I>

Inparticular, bevery careful toensure that
items ofclothing (ties,shirt, sleeves etc.),jew-
elry, long hair,hand orfingers cannotget
caught inthe engine-compartment blower,fan,
belts orother moving parts.
The radiator andradiator fansareinthe front
of the car.
The fans canstart orcontinue runningasa
function oftemperature, evenwiththeengine
switched off.
Carry outwork inthese areasonlywith theen-
gine off,theignition switched off,and exercise
extreme caution.

I>
Your Porsche isequipped withanelectronic ig-
nition system. Whentheignition ison, high volt-
age ispresent inall wires connected withthe
ignition system; therefore, exerciseextreme
caution whenworking onany part ofthe engine
while theignition ison orthe engine isrunning.

I>
Always support yourcarwith safety stands ifit
is necessary towork under thecar.

I>
When working underthecarwithout safety
stands butwith thewheels onthe ground,
make surethecar ison level ground, the
wheels areblocked, andthat theengine
cannot bestarted.
Remove theignition key.
I>

Donot smoke orallow anopen flame around
the battery orfuel.
Keep afire extinguisher inclose reach.

I>
Incomplete orimproper servicingmaycause
problems inthe operation ofthe car. Ifin doubt
about anyservicing, haveitdone byyour au-
thorized Porschedealer.
Improper maintenance duringthewarranty pe-
riod may affect yourPorsche warranty cover·
age.

I>
Supplies offluids, e.g.engine oil,brake fluidor
coolant, arehazardous toyour health.
Keep these fluidsoutofchildren's reachand
dispose ofthem inaccordance withtheappro-
priate regulations.

I>
Some countries requireadditional toolsand
special sparepartstobe carried.
Please makeenquiries beforedriving abroad.

lires/Wheels
The original equipment tiresandwheel rimson
your Porsche complywithallapplicable Federal
Motor Vehicle SafetyStandards.

For your safety remember thefollowing:

- Wheel rimsandwheel boltsarematched tofit
your Porsche.
- Ifyou intend touse other thanoriginal equip-
ment wheels, besure thatthey conform to
Porsche specifications foryour model.
Only tires withthesame makeandwith the
same specification code(e.g.
"NO", "Nl"..
J

can bemounted.
- The useofwheel rimsandwheel boltsthatdo
not meet specifications ofthe original factory
installed equipment willaffect thesafe opera-
tion ofyour vehicle.
- Before youplan onexchanging wheels,or
snow tiresalready mounted onthe wheel rims,
consult yourauthorized Porschedealer.Your
dealer hasthetechnical information necessary
to advise youwhich wheel rimsandwheel bolts
are compatible withtheoriginal factoryinstal-
lations.
A

Warning!
Risk ofloss ofcontrol andserious personal
injury.

I>
Ifwhile driving, yourvehicle experiences asud-
den vibration orride disturbance, and/oryou
suspect thatpossible damagetoyour tires or
vehicle hasoccurred, youshould immediately
reduce yourspeed without excessive useof
the brakes.

I>
Stop thevehicle assoon aspossible, andin-
spect thetires.
If you cannot determine thecause forthe dis-
turbance, haveyourvehicle towedtothe near-
est Porsche ortire dealer tohave yourvehicle
or tire(s) inspected.

I>
Continuing tooperate thevehicle without cor·
rection couldresult inaloss ofcontrol and
serious personal injury.
PracticalTips,Emergency Service
141

Unifonn TireQuality Grading

Quality grades canbefound where applicable on
the tire sidewall between treadshoulder andmax-
imum section width.

142
PracticalTips,Emergency Service
Example

All passenger cartires must conform toFederal
Safety Requirements inaddition tothese grades.
Treadwear

The treadwear gradeisacomparative rating
based onthe wear rateofthe tire when tested un-
der controlled conditions onaspecific govern-
ment testcourse.
For example, atire graded 150would wearone
and ahalf (1-1/2) timesaswell onthe government
course asatire graded 100.
The relative performance oftires depends upon
the actual conditions oftheir use,however, and
may depart significantly fromthenorm duetovari-
ations indriving habits, service practices anddif-
ferences inroad characteristics andclimate.

Traction AA,A,B,C

The traction grades,fromhighest tolowest, are
AA, A,S,and Cand they represent thetire's ability
to stop onwet pavement asmeasured undercon-
trolled conditions onspecified government test
surfaces ofasphalt andconcrete.
A tire marked Cmay have poortraction perfor-
mance.

A
Warning!

The traction gradeassigned tothis isbased on
braking (straight-ahead) tractiontestsanddoes
not include cornering (turned)traction, accelera-
tion, hydroplaning orpeak traction characteris-
tics.

Temperature A,8,C

The temperature gradesareA(the highest), Band
C, representing thetire's resistance tothe gener-
ation ofheat anditsability todissipate heatwhen
tested undercontrolled conditions onaspecified
indoor laboratory testwheel.
Sustained hightemperatures cancause themate-
rial ofthe tire todegenerate andreduce tirelife,
and excessive temperature canlead tosudden
tire failure.
The grade Ccorresponds toalevel ofperfor-
mance whichallpassenger cartires must meet
under theFederal MotorVehicle SafetyStandard

No. 109.

Grades Band Arepresent higherlevelsofperfor-
mance onthe laboratory testwheel thanthemini-
mum required bylaw.

A
Warning!

The temperature gradeforthis tireisestablished
for atire that isproperly inflatedandnotoverload-

ed.

Excessive speed,underinflation, orexcessive
loading, eitherseparately orincombination, can
cause heatbuildup andpossible tirefailure.
Tire
pressures

A
Warning!
Incorrect tirepressure causesincreased tire
wear andadversely affectsroadhandling.

I>
Always useanaccurate tirepressure gauge
when checking inflationpressures.

I>
Donot exceed themaximum tirepressure list-
ed onthe tire sidewall.
Please observe thechapter "VEHICLE IDENTI-
FICATION, TECHNICAL DATA"onPage 179.

I>
Cold tireinflation pressure means:alltires
must becold, ambient temperature maximum
68°F (20°C), whenadjusting theinflation pres-
sure.
Avoid sunlight strikingthetires before measur-
ing cold pressures, sincethepressures would
rise from temperature influence.

I>
Valve capsprotect thevalve fromdustand
dirt, andthus from leakage.
Always screwcapstightly down.
Replace missingcapsimmediately.

I>
Donot use commercially availablesealantor
tire inflating bottles.
Tire
traction

A
Warning!
When driving onwet orslushy roads,a
wedge ofwater maybuild upbetween the
tires andtheroad. Thisphenomenon is
known as"hydroplane" andmay cause par-
tial orcomplete lossoftraction, vehicle
control orstopping ability.
I>
Reduce speedonwet surface toprevent this.

Tire life

Tire lifedepends onvarious factors, i.e., road
surfaces, trafficandweather conditions, driving
habits, typeoftires andtirecare.

I>
Inspect yourtires forwear anddamage before
driving off.Ifyou notice uneven orsubstantial
wear, wheels mightneedalignment ortires
should bebalanced orreplaced.
Practical Tips,Emergency Service

Tirewear

The original equipment tiresonyour Porsche have
built-in tirewear indicators. Theyaremolded into
the bottom ofthe tread grooves andwillappear as
approximately 1/2in(12 mm) bands whenthetire
tread depth isdown to1/16 ofan in(1.6 mm).
When theindicators appearintwo ormore adja-
cent grooves, itis time toreplace thetires. We
recommend, however,thatyoudonot letthe tires
wear down tothis extent.
Worn tirescannot griptheroad surface properly
and areeven lesseffective onwet roads.
In the United States, statelawsmaygovern the
minimum treaddepth permissible. Followallsuch
laws.
PracticalTips,Emergency Service
/!\

Warning!
Driving onworn tirescanresult inloss of
control ofthe vehicle andcould cause severe
personal injuries.

0>
Donot drive withworn tiresortires showing
cuts orbruises asthey mayleadtosudden
deflation andloss ofcontrol whichcouldcause
severe personal injury.

0>
Specialized highperformance tiresonhigh
performance sportscarsexhibit morewear
than those onafamily sedan, oreven ahigh
performance sedan.
Therefore, itis important tocheck yourtire
pressure andcondition atleast every two
weeks.
If you notice thattires arewearing unevenly, con-
sult your Porsche dealer.
Uneven wearmaynotalways bedue toimproper
wheel alignment. Itcan bethe result ofindividual
driving habitssuchascornering athigh speeds. If
the tire pressure isnot checked andadjusted
regularly, abnormal tirewear canalso occur.
Tire
care

0>
Avoid damaging tiresandwheel rims.

0>
Ifyou must driveoveracurb orother obstacle,
drive slowly andatan obtuse angle.

0>
Check tiresforuneven wearanddamage
before driving off.

0>
Remove imbedded material.

0>
Replace wornordamaged tiresimmediately.

0>
Keep oil,fuel, brake fluid,etc.away fromtires.

0>
Replace missingvalvestemcaps.

0>
Keep tiresinflated correctly.