LAMBORGHINI MURCIÉLAGO 2009 Service Repair Manual
Page 361 of 1173
1
L824 02 02 00
Fig.1
Fig.2
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
* D V 3 U H V V X U H ' H W H F W L R Q 6 \ V W H P $ W ( [ K D X V W 3 L S H
Each exhaust manifold is equipped with a differential pressure sensor (Fig.1 D E O H W R G H W H F W W K H S U H V V X U H À R Z L Q V L G H
W K H P D Q L I R O G L W V H O I 7 K L V V H Q V R U G H W H U P L Q H V W K H P L V ¿ U L Q J F \ O L Q G H U W K U R X J K W K H L Q M H F W L R Q V \ V W H P D Q G G L V S O D \ V W K U R X J K W K H 2 % ' , , H U U R U F R G H D Q \ H [ K D X V W S U R E O H P V
The differential pressure sensor R X W S X W V L J Q D O Fig.2 V H Q W W R W K H U H O H Y D Q W / , ( L V U H S U H V H Q W H G E \ D S X O V H V H U L H V
each pulse corresponds to a spec
L ¿ H G F \ O L Q G H U $ 0 , 6 ) , 5 ( L V G H W H F W H G Z K H Q W K H L Q G H [ L V J U H D W H U W K D Q W K H W K U H V K R O G
F D O L E U D W H G E \ W K H ( & 8
A. Threshold value ( E H O R Z W K L V Y D O X H P L V ¿ U L Q J L V L G H Q W L ¿ H G D Q G W K H 2 % ' , , S D J H L V G L V S O D \ H G
B. Peak value
7 R Y L H Z W K H V H Y D O X H V X V H W K H / ' $ 6 V \ V W H P (109114) D Q G R S H Q W K H ³ 0 L V ¿ U H V W D W X V ´ Z L Q G R Z
Page 362 of 1173
1
L824 02 02 03
Fig.1
A
B
C
® Automobili Lamborghini S.p.A.
7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
( [ K D X V W
pressure sensor disassembly
1. Disconnect the connector ( A-Fig.1) connected to the sensor ( B-Fig.1).
2. Unscrew the two nuts ( C-Fig.2) that secure the sensor.
3. Remove the sensor.
Page 363 of 1173
1
L824 02 02 05
Fig.1
A
B
C
® Automobili Lamborghini S.p.A.
7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
( [ K D X V W
pressure sensor assembly
1. Tighten the two nuts ( A-Fig.1) that secure the sensor ( B-Fig.1).
2. Connect the connector ( C-Fig.1).
Page 364 of 1173
1
L824 02 03 00
A
B
C
Fig.1
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
) X H O $ Q W L ( Y D S R U D W L R Q 6 \ V W H P
The anti-evaporation system prevents the fuel vapors, which consist of the lightest fractions of the hydrocarbons that form in the tank, from discharging into the atmosphere and being suctioned again to be burned.
The system operates especially when the outside temperature is high and the fuel temperature rises, thus increasing the tendency to evaporate. 2 S H U D W L Q J 3 U L Q F L S O H
7 K H I X H O Y D S R U V L Q W K H W D Q N D U H F R Q Y H \ H G E \ P H D Q V R I D À R D W L Q J Y D O Y H L Q V W D O O H G R Q W K H W D Q N W R D F D Q L V W H U Z K L F K F D Q
absorb them when the engine is off. 7 K H À R D W L Q J Y D O Y H K D V W K H I R O O R Z L Q J I X Q F W L R Q V •It prevents the fuel from reaching the canister in the case of hard acceleration/deceleration when the car has a
full tank, or from spilling from the tank, in case the car rolls over;
• It allows the vapors to pass from the tank to the canister;
• It enables to discharge into the atmosphere any excess pressure inside the tank (electrovalve malfunctioning,
clogged pipe).
A. From the tank
B. To the canister
C. Discharge into the atmosphere
Page 365 of 1173
2
L824 02 03 00
A
Fig.2
B
C
'
(
F
G
I
H
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
The canister is connected, by means of two solenoid valves, to two pipes that convey the vapors to the engine intake
manifolds. With the engine running, each solenoid valve is piloted in duty-cycle by the engine control unit according
to engine speed and load, thus putting the canister into communication with the intake manifold and allowing the
suction of the vapors inside the canister. At high engine speed, a venting valve (VISTON valve), connecting the
F D Q L V W H U W R W K H D W P R V S K H U H E \ P H D Q V R I D Q D G H T X D W H D L U ¿ O W H U S U H Y H Q W V W K H F D Q L V W H U L P S O R V L R Q W K D W F D Q E H F D X V H G by the engine vacuum.
The fuel vapor sensor generates a OBDII error in case of not controlled fuel vapor emission (not pressurized tank with leakage from the pipes or plug missing).
Fuel anti-evaporation system layout (Fig.2)
A. Fuel vapors pressure sensor
B. Floating valve
C. Fuel tank
D. Right suction fuel vapor inlet E. Left suction fuel vapor inlet
F. Venting valve (VISTON)
* $ L U ¿ O W H U I R U F D Q L V W H U Y H Q W L O D W L R Q H. Canister
I. Solenoid valves
Page 366 of 1173
1
L824 02 03 03
Fig.1
Fig.2
A
B
C
B
® Automobili Lamborghini S.p.A.
7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
7 K H S U H V H Q W V H F W L R Q F R Q W D L Q V W K H I R O O R Z L Q J G L V D V V H P E O \ V H T X H Q F H V $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y HB) Canister $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y H 3 U H O L P L Q D U \ R S H U D W L R Q V •
Remove the right hood support piston (012703).
• Disassemble the silencer safety grid (025103).
• Disassemble the right side carbon bulkhead (081303).
• ' L V D V V H P E O H W K H D L U ¿ O W H U J X D U G (013303).
9 D O Y H G L V D V V H P E O H
1. Disassemble the fuel anti-evaporation valve ( A-Fig.1) by freeing the six screws that secure it to the tank.
B) Canister 3 U H O L P L Q D U \ R S H U D W L R Q V • Remove the left hood support piston (012703).
• Disassemble the silencer safety grid (025103).
• Disassemble the left side carbon bulkhead (081303).
• ' L V D V V H P E O H W K H D L U ¿ O W H U J X D U G (013303).
• ' L V D V V H P E O H W K H D L U ¿ O W H U (013303).
Canister disassemble
1. Disconnect the three pipes ( B-Fig.2) connected to the canister.
2. Remove the canister ( C-Fig.2).
Page 367 of 1173
1
L824 02 03 05
Fig.1
Fig.2
A
C
B
C
® Automobili Lamborghini S.p.A.
7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
7 K H S U H V H Q W V H F W L R Q F R Q W D L Q V W K H I R O O R Z L Q J D V V H P E O \ V H T X H Q F H V $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y HB) Canister $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y H
1.
Assemble the fuel anti-evaporation valve ( A-Fig.1) on the tank using the six socket head screws.
• $ V V H P E O H W K H D L U ¿ O W H U J X D U G (013305).
• Assemble the right side carbon bulkhead (081305).
• Assemble the silencer safety grid (025105).
• Position the right hood support piston (012705).
B) Canister
1. Place the canister ( B-Fig.2) in its special housing inside the left side of the vehicle.
2. Reconnect the three pipes ( C-Fig.2) of the canister.
• $ V V H P E O H W K H D L U ¿ O W H U (013305).
• $ V V H P E O H W K H D L U ¿ O W H U J X D U G (013305).
• Assemble the left side carbon bulkhead (081305).
• Assemble the silencer safety grid (025105).
• Position the left hood support piston (012705).
Page 368 of 1173
1
L824 02 51 00
Fig.1
A
BD
CG
E
H
I
F
® Automobili Lamborghini S.p.A.
7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
General Description The exhaust system consists of the following parts: •
Six in two in one insulated manifold;
• Single catalytic converter (EU) or with post-catalyst (USA);
• Exhaust silencer.
( [ K D X V W V \ V W H P ) L J
A. Exhaust manifold
B. CO pick-up pipe
C. Lambda sensor upstream of the catalytic converter (LINEAR)
D. Catalytic converter
E. Thermocouple outlet
F. Lambda sensor downstream of the catalytic converter
G. Post-catalyst (USA)
H. Exhaust silencer
I. Exhaust terminal
Page 369 of 1173
2
L824 02 51 00
Fig.2
ACB
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
& D W D O \ W L F & R Q Y H U W H U
The catalytic converter is a device that simultaneously reduces the three main pollution components in the exhaust: Unburnt hydrocarbons (HC), carbonmonoxide (CO) and nitrogen oxides (NOx). Inside the catalytic converter two chemical reactions take place: •Oxidizing of the CO and HC, converted into carbon dioxide (CO2) and water (H2O);
• Reduction of the NOx converted into nitrogen (N2).
These reactions are possible in a very short time due to the presence inside the structure (metal block) of the
catalyst, of a layer of active substances (platinum and rhodium) that considerably speed up the conversion of the harmful substances.
7 K H H I ¿ F L H Q F \ R I W K L V F R Q Y H U V L R Q S U R F H V V K R Z H Y H U G H S H Q G V R Q W K H I D F W W K D W W K H P L [ W X U H V W U H Q J W K W K D W L V X V H G E \ W K H
H Q J L Q H F R Q W L Q X D O O \ À X F W X D W H V D U R X Q G W K H V W R L F K L R P H W U L F Y D O X H W K D W L V R E W D L Q H G Y L D W K H I H H G E D F N F D U U L H G R X W E \ W K H control unit based on the lambda sensor signals.
Moreover the conversion processes take place with temperatures over 300 to 350°C: Therefore it is essential that
the catalytic converter reaches this temperature as soon as possible so as to operate correctly.
& D W D O \ W L F F R Q Y H U W H U F K H P L V W U \ ) L J
A. Metal block
B. Metal support
C External steel wrapping
Page 370 of 1173
3
L824 02 51 00
Fig.3
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
The causes of destruction of the catalyst inner part are mainly two: •Lead in the fuel, that lowers the conversion level to practically nothing (“lead poisoning”) and irreparably
damages the lambda sensor too;
• & R P S O H W H O \ X Q E X U Q W I X H O L Q W K H H [ K D X V W J D V G X H W R P L V ¿ U L Q J 7 K L V F D X V H V D Q L Q F U H D V H L Q W H P S H U D W X U H V X F K D V
to cause the melting of the metal support. As a consequence the connector must never, in any circumstances, be disconnected from the coils when the engine is running.