Powertrain Management: Service Precautions

The most important working regulations and warning notes
Folder 2 (Fuel, exhaust and ignition system)
Group 20 - Fuel supply, control

Danger: Danger of poisoning!
^ Gasoline is toxic.
^ Inhaling vapors can lead to irritation of the mucous membranes and eyes.
^ It can be carcinogenic. It represents a serious risk to health when inhaled, touched or swallowed over longer periods.
^ Only work on the fuel system in well-ventilated rooms.
^ Wear protective gloves that are fuel-resistant.
^ Wear a breathing mask with activated charcoal filter; do not breathe in any fuel vapors.
^ Ensure that there is adequate ventilation or extract all fuel vapors.
^ Before opening the fuel lines or fuel hoses, relieve the fuel pressure.
^ Collect escaping fuel, absorb it if necessary with a suitable binding material and dispose of properly.
^ Pay attention to cleanliness when working on the fuel system.

Warning: Danger of fire!
^ Keep clear of ignition sources.
^ Do not smoke.
^ Danger of fire due to naked flames and sparks, e.g. during welding or grinding work.
^ Danger of fire due to escaping fuel, e.g. on hot engine components or due to electrostatic charge.
^ Secure the vehicle, e.g. with a warning sign.
^ Change arty clothing soaked with fuel immediately.
^ In the case of fire, use CO2 or dry powder fire extinguishers.

Note:
^ When working on the fuel system, the ignition must be turned off.
^ Absorb any escaping fuel using a suitable binding material or a cloth.
^ Cloths which have absorbed fuel must be disposed of according to the applicable national laws.
^ The fuel system must be depressurize before starting work on it.
^ Only work on the fuel system in well-ventilated rooms.
^ Any seals which have been removed must always be replaced.

Group 21 - Exhaust system, turbocharging

Caution: Danger of burn!
^ Components of the exhaust system can be extremely hot.
^ Allow the parts to cool down first and wear protective gloves.

Note:
^ After the connecting clamps in the exhaust system have been released, they must always be replaced.
^ During assembly work on the exhaust system, ensure that the components are aligned and installed correctly.
^ Seals that have been removed must be replaced by new ones.
^ Observe the correct tightening sequence and tightening torques.

Group 24 - Fuel system, electronic injection

Danger: Danger of poisoning!
^ Gasoline is toxic.
^ Inhaling vapors can lead to irritation of the mucous members arid eyes.
^ It can be carcinogenic. It represents a serious risk to health when inhaled, touched or swallowed over longer periods.
^ Only work on the fuel system in well-ventilated rooms.
^ Wear protective gloves that are fuel-resistant.
^ Wear a breathing mask with activated charcoal filter; do not breathe in arty fuel vapors.
^ Erasure that there is adequate ventilation or extract all fuel vapors.
^ Before opening the fuel fines or fuel hoses, relieve the fuel pressure.
^ Collect escaping fuel, absorb it if necessary with a suitable binding material arid dispose of properly.
^ Pay attention to cleanliness when working on the fuel system.

Warning: Danger of fire!
^ Keep clear of ignition sources.
^ Do not smoke.
^ Danger of fire due to naked flames arid sparks, e.g. during welding or grinding work.
^ Danger fire due to escaping fuel, e.g. on hot engine components or due to electrostatic charge.
^ Secure the vehicle, e.g. with a warning sign.
^ Change arty clothing soaked with fuel immediately.
^ In the case of fire, use CO2 or dry powder fire extinguishers.

Note:
^ When working on the fuel system, the ignition must be turned off.
^ Absorb any escaping fuel using a suitable binding material or a cloth.
^ Cloths which have absorbed fuel must be disposed of according to the applicable national laws.
^ The fuel system must be depressurize before starting work on it.
^ Only work on the fuel system in well-ventilated rooms.
^ Any seals that have been removed must always be replaced.

Precautionary measures when handling oxygen sensors

Caution: Oxygen sensor can be damaged if handled improperly.
^ Do rot remove the plastic cap on the thread urge just prior to fitting the oxygen sensor. The thread grease must under circumstances come into contact with the corrector.
^ Protect sensors - before and after fitting against mechanical shocks.
^ Sensors that were dropped on the floor must not be used owing to the risk of a broken ceramic insulator.
^ The cables must not be twisted or kinked when the sensors are screwed in. Avoid pulling on the cable arid corrector.
^ Cleanliness in the housing of the plug corrections is of utmost importance for the function of the oxygen sensor. Particles of dirt can impair the function of the oxygen sensor. Therefore, the corrector must be protected against arty arid all types of soiling.
^ Sensors with a soiled or damaged corrector must no longer be used.
^ Protect the cables arid plugs when transporting the exhaust system with the sensors already fitted.
^ High-pressure cleaning equipment must not be used in the area of the sensors arid plug corrections.
^ Contact arid corrosion agents, e.g. Stabilant, must not be applied on the plug contacts of the oxygen sensors.

Group 26 - Exhaust system

Caution: Danger of injury!
^ When working on the exhaust system, it must be appropriately secured against falling or lowering.
^ Never use defective lifting equipment.
^ Only use lifting equipment tested arid approved by Porsche.

Caution: Danger of poisoning!
^ Only operate the engine with an appropriate exhaust gas extraction system.

Caution: Danger of burn!
^ Components of the exhaust system can be extremely hot.
^ Allow the parts to cool down first and wear protective gloves.

Note:
^ After the connecting clamps in the exhaust system have been released, they must always be replaced.
^ During assembly work on the exhaust system, ensure that the components are aligned and installed correctly.
^ Seals that have been removed must be replaced by new ones.
^ Observe the correct tightening sequence and tightening torques.

Group 28 - Ignition system

Caution: Danger of electric shocks.
^ This can cause cardiac irregularities.
^ When working on the ignition system, the ignition key must be removed from the ignition lock.
^ The ignition system must be disconnected from the power supply before starting work on it.
^ Only connect/disconnect fines or plugs where the ignition is turned off.
^ Only correct measuring devices when the ignition is tarried off.

Note:
^ The ignition system must be disconnected from the power supply before starting work on it.
^ Observe the torques specified.
^ Spark plug threads must not be greased.