Preliminary Work
- Risk of damage to units or components
→ Protect components from dirt and contamination.
→ Clean or replace dirty components.
Information
- Grease O-rings, hoses and lines in the cooling system with Kluberplus Gel (Part No. 000.043.205.93).
Information
- All engine repairs must be carried out using only the specified tools.
- Only these tools have been tested and approved.
Information
- Photos taken with a digital camera are helpful for dealing with complicated line routing (engine wire harness).
- → WM 975219 REMOVING AND INSTALLING WIRE HARNESS FOR ENGINE .
- Remove the engine.
- Remove the transmission
→ WM 343527 REMOVING AND MOUNTING TRANSMISSION .
→ 373427 REMOVING AND MOUNTING PORSCHE DOPPELKUPPLUNG (PDK) .
- Remove the flywheel.
→ 136019 REMOVING AND INSTALLING FLYWHEEL - PDK TRANSMISSION .
- Mount the engine on the engine assembly support.
→ 1001IN TOOLS FOR REMOVING UNITS AND WORKING ON THE ENGINE ASSEMBLY SUPPORT .
- Remove front silencer.
- Remove rear silencer.
- Remove engine carrier.
- Remove exhaust manifold with catalytic converter.
→ 261019 REMOVING AND INSTALLING EXHAUST MANIFOLD WITH CATALYTIC CONVERTER .
- Drain engine oil.
- 9.1. Unscrew drain plug and collect emerging oil.
- 9.2. Then screw in drain plug with a new sealing ring and tighten to the specified torque.
→ Tightening torque: 50 Nm (37 ft. lb.)
- Loosen three external Torx screws (E10, M8 x 12) on the hydraulic pump pulley (do not unscrew fully).
- Remove the drive belt.
→ 137819 REMOVING AND INSTALLING DRIVE BELT .
- 11.1. Unscrew screws for hydraulic pump pulley and remove the pulley.
- Disconnect cable plugs -1 and 3-
on the intake-air distributor on cylinder bank 1-3. Unscrew one external Torx screw (E10, M6 x 12) -2-
used to secure the cable duct.
- Cable plug on engine compartment temperature sensor
- Cable duct mounting on cylinder bank 1-3
- Cable plug on control valve for tank ventilation
- 12.1. 3.8-litre engine only:
Pull off cable plug and vacuum line on control valve for tuning flap.
- Cable plug on control valve for tuning flap on the resonance tube.
- Pull off line on control valve.
- Disconnect positive crankcase ventilation line on the resonance tube -1-
and unclip it at the intake-air distributor -arrows-
. Turn the line towards the rear.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- 13.1. Unscrew one external Torx screw (E10, M6 x 12) -2- used to secure the cable duct to the intake-air distributor.
- Loosen holder at the oil-fill pipe. To do this, unscrew three external Torx screws (E10, M6 x 12) -2-
.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- 14.1. Unclip positive crankcase ventilation line -3- at the oil-fill pipe.
- Completely remove intake-air distributor.
→ 244619 REMOVING AND INSTALLING INTAKE-AIR DISTRIBUTOR .
- 15.1. Unscrew six external Torx screws (E10, M6 x 35).
- 15.2. Completely remove the intake-air distributor and resonance tube.
- 15.3. Clean sealing faces and close off ducts with adhesive tape or stoppers.
- 15.4. Replace molded seals.
- Remove oil filler neck -1-
.
- 16.1. Unscrew two external Torx screws (E10, M6 x 20) -2- and pull the connection piece out of the crankcase.
- 16.2. Close off opening with adhesive tape or a stopper.
- 16.3. Replace O-ring.
- Remove the generator.
→ 272219 REMOVING AND INSTALLING GENERATOR .
- 17.1. Pull off cable plug and unscrew M8 hexagon nut on the B+ line. Remove B+ line.
- 17.2. Loosen external Torx screws (E12, M8) by two to three turns -1- and fit screw insert (E12) with short extension on the screw head. Loosen threaded sleeves in the unit carrier by tapping gently with a plastic hammer.
- 17.3. Unscrew the right-hand screw, leave the left-hand screw in place and take out the generator.
- Remove upper heat shields -1-
for ignition coils.
→ 261219 REMOVING AND INSTALLING HEAT SHIELD .
- 18.1. Unscrew two external Torx screws (E10, M6 x 12) -2- on each and remove the heat shields.
- Unplug several cable plugs and disconnect ground straps for ignition coils.
- Connectors for ignition coils
- Internal Torx screws (T40) securing ground connection for ignition coils
- Hall sender
- Solenoid hydraulic valve for valve lift adjustment
- Remove holder for rear silencer -1-
.
- 20.1. Unscrew four external Torx screws (E12, M8 x 20) -2- and remove holder.
- Disconnect B+ line -1- and control line for solenoid switch (terminal 50) -2- at the starter.
- Remove positive crankcase ventilation line -1-
(air conditioning compressor remains in the vehicle when you remove the engine).
- 22.1. Open rapid-action couplings by pressing the locking ring -3- and unclip line from the holder -arrow- .
- 22.2. Replace O-rings on the connection point to the bracket for the oil/water heat exchanger.
- Remove hydraulic pump -1- together with the pressure line -2- and return line -3- .
- Remove housing cover for coolant regulator -1-
and coolant intake tube -5-
(from the coolant reservoir).
- 24.1. Unscrew one external Torx screw (E10) M6 x 40 -2- , three M6 x 50 screws -3- and take off the cover and thermostat.
- 24.2. Unscrew two external Torx screws (E10, M6 x 12) -4- and pull off the intake tube. Replace O-rings.
- Remove oil separator -1-
.
- 25.1. Unscrew two external Torx screws (E10, M6 x 25) -2- and pull off the oil separator. Replace O-rings.
- Remove coolant pipe with coolant hose and connection piece (Henn coupling).
- 26.1. Unscrew three external Torx screws (E12, M8 x 70) -2- on the unit carrier.
- 26.2. Unscrew two external Torx screws (E10, M6 x 12) -2- and remove the coolant pipe and connection piece -1- .
- Remove the coolant distributor and coolant hoses (on the oil/water heat exchanger).
- 27.1. Open two spring band clamps -1- and pull the hoses -2- off the oil/water heat exchanger.
- 27.2. Unscrew two external Torx screws (E10, M6 x 25) -2-
and pull up the distributor -1-
.
Coolant distributor -1- and pipes -2- for the coolant pump and thermostat housing.
- 27.3. Replace O-rings -1- and grease new O-rings with Kluberplus Gel (Part No. 000.043.205.93).
- Unplug several cable plugs at the engine, unclip all cable holders and unscrew two external Torx screws (E12, M8 x 16) on the cable duct.
→ 975219 REMOVING AND INSTALLING WIRE HARNESS FOR ENGINE .
- Solenoid hydraulic valve for camshaft control (top of cylinder head)
- Fuel pressure sensor on fuel collection pipe, cylinder bank 4-6
- Oil pressure and temperature sensor on bracket for oil/water heat exchanger
- Fuel injectors
- Knock sensors
- Flow control valve on high-pressure pump
- Coolant temperature sensor on unit carrier
- Pressure-regulating valve and oil-level sender on oil pan
- 28.1. Remove engine wire harness.
- Remove transport eyebolt.
- 29.1. Unscrew two external Torx screws (E10, M6 x 25).
- Remove fuel connection line -1-
to the fuel collection pipes.
- 30.1. Loosen two external Torx screws (E10, M6 x 12) at the clamps.
- 30.2. Unscrew two external Torx screws (E10) on the fuel line holders. One screw on the center holder M6 x 16 -3- and one screw on the right holder M6 x 60 (screw point for bracket for oil/water heat exchanger) -2- .
- 30.3. Screw off three union nuts (a/f 17) -4- and remove the line. Collect emerging fuel with a cloth.
- Remove oil/water heat exchanger -1-
.
- 31.1. Unscrew six internal Torx screws (T30, M6 x 20) -2- and remove heat exchanger.
- 31.2. Collect any drops of fluid with a clean cloth and clean the sealing faces.
- 31.3. Replace O-rings.
Information
- The bracket for the oil/water heat exchanger must not be removed at an angle or levered off at one side.
- The bracket's aluminum supports can break off in the crankcase.
- Remove bracket for oil/water heat exchanger -1-
.
- 32.1. Unscrew six external Torx screws (E10): four M6 x 45 screws -2- and two M6 x 60 screws -3- . Pull the bracket up and out.
- 32.2. Close off oil ducts with stoppers.
- 32.3. Replace two O-rings at the top -4- and four O-rings on the underside.
- Remove fuel collection pipes.
- 33.1. Unscrew four external Torx screws (E10, M6 x 30) -1- and pull the fuel collection pipes -2- out of the cylinder heads.
- 33.2. Close off fitted bores in the cylinder head with stoppers.
- Remove knock sensors (mark installation position using a water-resistant marker).
- 34.1. Unscrew one external Torx screw (E12, M8 x 16) on each sensor and remove sensors.
- Remove fuel lines for the high and low-pressure side.
- 35.1. Loosen and screw off hexagon union nuts on the high-pressure pump -1- . Low-pressure line -2- : a/f 17, high-pressure line -4- : a/f 14.
- 35.2. Unscrew one external Torx screw (E10) M6 x 16 -3- and one M6 x 12 screw -5- at the retaining points and remove the lines.
- Remove high-pressure pump.
→ 246319 REMOVING AND INSTALLING HIGH-PRESSURE PUMP .
- 36.1. Unscrew three external Torx screws (E10, M6 x 12) on the heat shield and remove the heat shield.
- 36.2. Unscrew three external Torx screws (E10) on the support: two M6 x 25 screws -1- and one M6 x 40 screw -2- .
- 36.3. Unscrew two external Torx screws (E10, M6 x 25) -3- and pull out the pump.
- 36.4. Replace O-ring.
- Remove vacuum line -1-
for brake booster.
→ 477755 REPLACING VACUUM LINE FOR BRAKE BOOSTER (SECTION AT ENGINE) .
- 37.1. Unscrew external Torx screws (E10, M6 x 12) -2- and pull out line at the vacuum pump.
- Remove vacuum pump.
- Remove lower coolant guide -1-
.
- 39.1. Unscrew six external Torx screws (E10, M6 x 25) -2- .
- 39.2. Check molded seals and replace if necessary.
- Use turning device 9773 -1-
to turn the engine clockwise at the vibration damper until the TDC 1/4
marking on the vibration damper is aligned with the bore in the crankcase.
- 40.1. Secure the engine using one of the locating pins 9595/1 -2- on the vibration damper.
- Remove vibration damper.
→ WM 137519 REMOVING AND INSTALLING VIBRATION DAMPER .
- 41.1. Loosen and unscrew six external Torx screws (E12, M8 x 25 x 1) and remove the vibration damper.
- 41.2. Check dowel sleeve and crankshaft flange for damage.
- Loosen bracket for coolant pump -1-
.
- 42.1. Turn the belt tensioner clockwise as far as it will go at the hexagon (a/f 30). Lock the tensioner at the crankcase bore using an M8 screw (e.g. M8 x 50) -2- .
- 42.2. Unscrew four external Torx screws: one M8 x 70 (E12) -3- , one M8 x 50 (E12) -4- , one M6 x 20 (E10) -5- and one M8 x 25 (E12) -6- .
- 42.3. Unscrew one M10 threaded bolt (engine carrier mounting) -7- (two M10 lock nuts).
- Remove coolant connection pipe -1-
to the thermostat housing.
- 43.1. Unscrew one external Torx screw (E10, M6 x 12) -2- on the retaining bracket for the crankcase.
- 43.2. Pull out pipe -1- on the thermostat housing.
- Remove thermostat housing -2-
.
- 44.1. Unscrew three external Torx screws (E10) M6 x 25 -4- and one M6 x 50 -3- .
- 44.2. Turn bracket for coolant pump slightly to the right.
- 44.3. Pull the thermostat housing -1- down at the unit carrier (double O-ring seal) and lift it off at the connecting tube -2- to the coolant pump at the same time.
- 44.4. Pull off bracket for coolant pump -1- . Replace O-rings -2 + 3- . Check seal for damage and replace it if necessary.
- 44.5. Replace molded seal on the connecting tube -3- .
- Remove unit carrier (coolant distributor housing). The screws for the engine connection piece -2-
and the additional attachment for the coolant pump bracket -3 (left) and 5-
have already been removed.
- 45.1. Unscrew another external Torx screws M8 x 50 -3 (right)- and one M8 x 35 -4- . Remove carrier, check dowel sleeve for damage and replace if necessary.
- 45.2. Replace molded seals.
- Remove cover for positive crankcase ventilation.
- 46.1. Cover on cylinder bank 1-3 -1- : Unscrew three external Torx screws (M6 x 20) -4- and replace O-ring -3- and molded seal -2- .
- 46.2. Cover on cylinder bank 4-6 -1- : Unscrew two external Torx screws (M6 x 20) -3- and replace O-ring -2- .
- Remove solenoid hydraulic valves for camshaft control.
- 47.1. Unscrew two external Torx screws (E8, M5 x 12) on each valve and pull off the valves.
- 47.2. Replace O-rings.
- Remove hall senders on the cylinder head cover.
→ 283919 REMOVING AND INSTALLING HALL SENDER .
- 48.1. Unscrew one external Torx screw (T40, M6 x 16) on each and pull off the hall senders.
- 48.2. Replace O-ring.
- Remove solenoid hydraulic valves for valve lift adjustment.
→ 155519 REMOVING AND INSTALLING SOLENOID HYDRAULIC VALVE FOR VALVE LIFT ADJUSTMENT .
- 49.1. Unscrew two external Torx screws (E8, M5 x 12) on each valve and pull off the valves.