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Engine Exhaust System Buick Regal V

Exhaust 16 illustrations ~1576 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Catalytic Converter Brace Fastener (LHU)58 N.m43 lb ft
Catalytic Converter Brace Bracket Fastener (LHU)58 N.m43 lb ft
Catalytic Converter-to-Bending Brace Fastener (LHU)35 N.m26 lb ft
Catalytic Converter-to-Exhaust Manifold Fastener (LUK)50 N.m37 lb ft
Catalytic Converter-to-Exhaust Front Pipe Fastener (L4)25 N.m18 lb ft
Catalytic Converter-to-Exhaust Front Pipe Fastener (LEA)18 N.m14 lb ft
Catalytic Converter-to-Exhaust Front Pipe Fastener (LHU)35 N.m26 lb ft
Catalytic Converter-to-Turbocharger (LHU)58 N.m43 lb ft
Exhaust Front Pipe Hanger Bracket Fastener60 N.m44 lb ft
Exhaust Front Pipe-to-Muffler Fastener18 N.m13 lb ft
Exhaust Manifold Fastener14 N.m124 lb in
Exhaust Manifold Heat Shield Fastener10 N.m89 lb in
Exhaust Rear Pipe Hanger Bracket Fastener20 N.m15 lb ft

Fastener Tightening Specifications

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United StatesCanada
Anti-SeizeLubricant8886247788862478

Adhesives, Fluids, Lubricants, and Sealers

Symptoms - Engine Exhaust

  1. Review the exhaust system description in order to familiarize yourself with the exhaust system components and the intended function of the components. Refer to «Exhaust System Description»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-system-description) .
  2. All diagnostics on a vehicle should follow a logical process. Strategy Based Diagnostics is a uniform approach for repairing all systems. The diagnostic flow is the place to start when repairs are necessary and may always be used in order to resolve a system problem. For a detailed explanation, refer to «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) .

Visual/Physical Inspection

  1. Inspect for aftermarket or non-OEM devices such as, but not limited to; tailpipe extensions, headers, and exhaust cutouts. Any aftermarket exhaust system devices could affect the operation and proper performance of the exhaust system.
  2. Verify the exact operating conditions under which the concern exists. Note factors such as engine RPM, engine temperature, engine load, and frequency of concern.
  3. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause any symptom.

Intermittent

Test the vehicle under the same conditions that the customer reported in order to verify the system is operating as designed.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

  1. Loss of power - Refer to «Restricted Exhaust»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system) .
  2. Poor acceleration - Refer to «Restricted Exhaust»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system) .
  3. Poor fuel economy - Refer to «Restricted Exhaust»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system) .
  4. Excessive smoke diesel - Refer to «Restricted Exhaust»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system) .
  5. Exhaust hissing noise - Refer to «Exhaust Leakage»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-leakage) .
  6. Exhaust popping noise - Refer to «Exhaust Leakage»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-leakage) .
  7. Exhaust rattle noise - Refer to «Exhaust Noise»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-noise) .
  8. Loud exhaust noise - Refer to «Exhaust Noise»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-noise) .
  9. Exhaust buzz, groan, hum noise - Refer to «Exhaust Noise»(/buick/regal/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-noise) .

Special Tools

J-35314-A Exhaust Back Pressure Gauge

Refer to Special Tools .

Diagnostic Aids

WARNINGRefer to Hot Exhaust System Warning .

For dual exhaust systems a quick check of exhaust flow will help determine which side of the exhaust system is restricted. The side that has less exhaust flow is the side that will be suspect, and diagnosis should begin there.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 4 The exhaust system has very low back pressure under normal conditions. If the exhaust system is restricted, a significant increase in the exhaust pressure is noticed on the J-35314-A gauge. Removing the HO2S sensor may set a DTC. When finishing this diagnostic table, be sure to clear all codes.
  2. 5 This step will isolate the catalytic converter from the remainder of the exhaust system.
  3. 8 Confirming that the condition has been fixed is essential. If the symptom still exists and the vehicle has a dual exhaust system, proceed to step 2 and repeat diagnostic procedure on the opposite exhaust pipe.
StepActionValue(s)YesNo
1Did you verify the customers complaint?Go to Step 2
2Did you review the exhaust symptoms diagnostic information and perform the necessary inspections?Go to Step 3Go to Symptoms - Engine Exhaust
3Is the system equipped with dual exhaust?Go to Diagnostic AidsGo to Step 4
4Remove the heated oxygen sensor (HO2S) that is in front of the catalytic converter. Refer to the appropriate procedure. Refer to Heated Oxygen Sensor Replacement - Sensor 1 , for the 2.0L engine or Heated Oxygen Sensor Replacement - Sensor 1 for the 2.2L or 2.4L engine. Install the J-35314-A Exhaust Back Pressure Gauge in place of the HO2S sensor. Start the engine. Increase and monitor the engine speed at 2, 500 RPM. Observe the exhaust system back pressure reading on the gauge. Does the reading exceed the specified value?9 kPa (1.25 psi)Go to Step 5Go to Step 8
5Turn the engine OFF and place the ignition in the lock position. Remove the J-35314-A gauge. Reinstall the HO2S sensor. Refer to Heated Oxygen Sensor Replacement - Sensor 1 , for the 2.0L engine or Heated Oxygen Sensor Replacement - Sensor 1 for the 2.2L or 2.4L engine.. Remove the post-catalyst HO2S sensor. Refer to the appropriate procedure. Refer to Heated Oxygen Sensor Replacement - Sensor 2 , for the 2.0L engine or Heated Oxygen Sensor Replacement - Sensor 2 for the 2.2L or 2.4L engine. Install the J-35314-A gauge in place of the post HO2S sensor. Start the engine. Increase and monitor the engine speed at 2, 500 RPM. Observe the exhaust system back pressure reading on the gauge. Does the reading exceed the specified value?9 kPa (1.25 psi)Go to Step 6Go to Step 7
6Inspect the exhaust system for the following conditions: Secondary catalytic converter restricted Damage in the exhaust pipe Debris in the exhaust pipe Muffler or resonator internal failure Two-layer exhaust pipe separation Did you find and correct the condition?Go to Step 8
7Replace the catalytic converter. Refer to Catalytic Converter Replacement (L4) , Catalytic Converter Replacement (LDK or LHU) . Did you find and correct the condition?Go to Step 8
8Remove the J-35314-A gauge. Reinstall the applicable HO2S sensor. Refer to the appropriate procedure: Heated Oxygen Sensor Replacement - Sensor 1 for the 2.0L engine Heated Oxygen Sensor Replacement - Sensor 2 for the 2.0L engine Heated Oxygen Sensor Replacement - Sensor 1 for the 2.2L or 2.4L engine Heated Oxygen Sensor Replacement - Sensor 2 for the 2.2L or 2.4L engine Clear any codes. Road test the vehicle in order to verify the repair. Did you correct the condition?System OKGo to Step 2

Restricted Exhaust

Exhaust Leakage

ConditionAction
WARNING: Refer to Hot Exhaust System Warning . DEFINITION: An exhaust leak may show stains at the area of the leak. The leak may be felt by holding a hand close to the suspected areas or using a smoke pencil. The leak may make a popping or hissing noise.Refer to Symptoms - Engine Exhaust prior to beginning this table.
Misaligned or improperly installed exhaust system componentsAlign and tighten the exhaust system components to the specifications. Refer to Fastener Tightening Specifications . Ensure the exhaust hangers are in the proper locations and not loose.
Exhaust leaks at the following connections: Exhaust manifold to pipe Flanges Pipe clampsTighten the components to the specifications. Refer to Fastener Tightening Specifications .
Seals or gaskets leaking; Exhaust manifold to cylinder head Exhaust pipes to exhaust manifold Catalytic converter connectionReplace the leaking seal or gasket. Refer to the affected components procedure for service.
Irregularities at the mating surfaces on the flange connectionsRepair as required or replace the affected component. Refer to the affected components procedure for service.
Catalytic Converter cracked or brokenReplace the catalytic converter. Refer to Catalytic Converter Replacement (L4) , Catalytic Converter Replacement (LDK or LHU) .
Exhaust system component connection welds leakingReplace the leaking component. Refer to the affected component's procedure for service.
Muffler or resonator, if equipped, damaged or leaking at the seamsReplace the affected muffler or resonator, if equipped. Refer to Exhaust Muffler Replacement (Dual) , Exhaust Muffler Replacement (Single) .
WARNING
Refer to Hot Exhaust System Warning .

Exhaust Leakage

Exhaust Noise

ConditionAction
WARNING: Refer to Hot Exhaust System Warning . DEFINITION: An audible or physical noise due to a faulty component or damaged components causing a loose or misaligned exhaust system resulting in a rattle or vibration noise, i.e. buzz, groan, hum.Refer to Symptoms - Engine Exhaust prior to beginning this table.
Popping or hissing noiseExhaust leak-Refer to Exhaust Leakage .
Loud exhaustCompare to a known good vehicle. Inspect for a damaged or failed muffler or resonator, if equipped. Replace the faulty muffler or resonator (if equipped). Refer to Exhaust Muffler Replacement (Dual) , Exhaust Muffler Replacement (Single) .
External rattle or vibration noiseInspect for a bent or loose hanger, loose heat shield, or loose clamp. Inspect for a exhaust pipe causing interference. Repair or replace the affected component. Refer to the affected component's service procedure.
Internal rattleTest the components by tapping with a rubber mallet to confirm a rattle. Replace the faulty catalytic converter, resonator, if equipped, or muffler. Refer to Exhaust Muffler Replacement (Dual) , Exhaust Muffler Replacement (Single) .
WARNING
Refer to Hot Exhaust System Warning .

Exhaust Noise

Scheme 1

Scheme 1: Exhaust Manifold Replacement (LUK or LEA)
Scheme 1: Exhaust Manifold Replacement (LUK or LEA)
CalloutComponent Name
Preliminary procedures Remove the exhaust front pipe. Refer to Exhaust Front Pipe Replacement (LHU) , Exhaust Front Pipe Replacement (LDK or LHU) . Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement (LAF) . Remove the exhaust manifold heated oxygen sensor. Refer to Heated Oxygen Sensor Replacement - Sensor 1 .
1Exhaust Manifold Nut (Qty: 10) CAUTION: Refer to Fastener Caution . Tighten 14 N.m (10 lb ft)
2Exhaust Manifold Gasket
3Exhaust Manifold Procedure Remove and discard the exhaust manifold gasket. Clean any exhaust manifold gasket debris from the cylinder head and exhaust manifold. Install new exhaust manifold gasket. Tighten the exhaust manifold nuts working from the center out.
CAUTION
Refer to Fastener Caution .

Exhaust Manifold Replacement (LUK or LEA)

Scheme 2

Scheme 2: Exhaust Manifold Replacement (LDK or LHU)
Scheme 2: Exhaust Manifold Replacement (LDK or LHU)
CalloutComponent Name
Preliminary Procedures Remove the turbocharger. Refer to Turbocharger Replacement . Remove the exhaust manifold heat shield.
1Exhaust Manifold Inverted Torx Nut WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . NOTE: Replace copper inverted torx nut with a NEW one. Tighten 14 N.m (10 lb ft)
2Exhaust Manifold Nut Tighten 14 N.m (10 lb ft)
3Exhaust Manifold Gasket
4Exhaust Manifold Procedure Clean the exhaust manifold and cylinder head mating surfaces. Install the exhaust manifold with a NEW gasket. Working from the inside out, tighten the exhaust manifold nuts to Tighten First Pass: 14 N.m (10 lb ft) Second Pass: 14 N.m (10 lb ft)
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .
NOTE
Replace copper inverted torx nut with a NEW one.

Exhaust Manifold Replacement (LDK or LHU)

Removal Procedure

WARNINGRefer to Hot Exhaust System Warning .
WARNINGRefer to Safety Glasses Warning .
  1. Disconnect the oxygen sensors after the catalytic converter.
  2. Remove the front exhaust nuts (1) from the rear muffler pipe.
  3. Remove the nuts (1) and gasket (2) from the lower catalytic converter.
  4. Remove the bolts (1) from the front exhaust pipe hanger bracket (2).
  5. Carefully lower the front exhaust pipe (3).

Installation Procedure

  1. Install the front exhaust pipe nuts (2) and gasket (1), to the rear muffler pipe and tighten to 18 N.m (13 lb ft).
  2. Install the nuts (1) of the front exhaust pipe to the lower catalytic converter and tighten to 25 N.m (18 lb ft).
  3. Install the bolts (1) to the front exhaust pipe hanger bracket (2) and tighten to 60 N.m (44 lb ft).
  4. Connect the oxygen sensor electrical sensors.
  5. Inspect the exhaust system for leaks.

Scheme 3

Scheme 3: Exhaust Front Pipe Replacement (LDK or LHU)
Scheme 3: Exhaust Front Pipe Replacement (LDK or LHU)
CalloutComponent Name
Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Catalytic Converter Nut (Qty: 3) WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Procedure Apply lubricant to the studs of the catalytic converter. Refer to Adhesives, Fluids, Lubricants, and Sealers . Tighten 35 N.m (26 lb ft)
2Exhaust Gasket TIP: Replace the gasket with a NEW one.
3Exhaust Muffler Nut (Qty: 2) Tighten 18 N.m (13 lb ft)
4Exhaust Front Hanger Bracket Bolt (Qty: 2) Tighten 60 N.m (44 lb ft)
5Exhaust Front Pipe
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Front Pipe Replacement (LDK or LHU)

Scheme 4

Scheme 4: Catalytic Converter Replacement (L4)
Scheme 4: Catalytic Converter Replacement (L4)
CalloutComponent Name
Preliminary Procedure Remove the exhaust front pipe. Refer to Exhaust Front Pipe Replacement (LHU) , Exhaust Front Pipe Replacement (LDK or LHU) .
1Catalytic Converter Nut (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 50 N.m (36 lb ft)
2Gasket
3Catalytic Converter
CAUTION
Refer to Fastener Caution .

Catalytic Converter Replacement (L4)

Scheme 5

Scheme 5: Catalytic Converter Replacement (LDK or LHU)
Scheme 5: Catalytic Converter Replacement (LDK or LHU)
CalloutComponent Name
Preliminary Procedures Remove the catalytic converter heat shield. Refer to Catalytic Converter Heat Shield Replacement (LDK OR LHU) . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the exhaust front pipe. Refer to Exhaust Front Pipe Replacement (LHU) , Exhaust Front Pipe Replacement (LDK or LHU) .
1Catalytic Converter Nut (Qty: 4) WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Tighten 58 N.m (43 lb ft)
2Catalytic Converter Seal
3Catalytic Converter Brace Bracket Nut Tighten 35 N.m (26 lb ft)
4Catalytic Converter
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Catalytic Converter Replacement (LDK or LHU)

Scheme 6

Scheme 6: Catalytic Converter Brace Replacement (LDK OR LHU)
Scheme 6: Catalytic Converter Brace Replacement (LDK OR LHU)
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the catalytic converter brace bracket bolts from the lower part of the catalytic converter. Refer to Catalytic Converter Replacement (L4) , Catalytic Converter Replacement (LDK or LHU) .
1Catalytic Converter Brace Bolt (Qty: 3) WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Tighten 50 N.m (37 lb ft)
2Catalytic Converter Brace Bracket Bolt Tighten 62 N.m (46 lb ft)
3Catalytic Converter Brace Bracket
4Catalytic Converter Brace
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Catalytic Converter Brace Replacement (LDK OR LHU)

Scheme 7

Scheme 7: Exhaust Muffler Replacement (Dual)
Scheme 7: Exhaust Muffler Replacement (Dual)
CalloutComponent Name
WARNING: Refer to Eye Protection Warning . WARNING: Refer to Hot Exhaust System Warning . Preliminary Procedure Lift and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Rear Exhaust Muffler to Exhaust Front Pipe Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 18 N.m (13 lb ft)
2Exhaust Gasket NOTE: Replace exhaust gasket with a NEW exhaust gasket.
3Exhaust Isolator NOTE: Clean and lubricate exhaust isolators for ease of installation.
4Exhaust Muffler
WARNING
Refer to Eye Protection Warning .
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .
NOTE
Replace exhaust gasket with a NEW exhaust gasket.
NOTE
Clean and lubricate exhaust isolators for ease of installation.

Exhaust Muffler Replacement (Dual)

Scheme 8

Scheme 8: Exhaust Muffler Replacement (Single)
Scheme 8: Exhaust Muffler Replacement (Single)
CalloutComponent Name
Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1WARNING: Refer to Eye Protection Warning . WARNING: Refer to Hot Exhaust System Warning . Exhaust Muffler Rear Hanger Fastener (Qty: 2) CAUTION: Refer to Fastener Caution Fastener Caution . Tighten 22 N.m (16 lb ft)
2Exhaust Isolator
3Exhaust Front Pipe Fastener Tighten 18 N.m (13 lb ft)
4Exhaust Gasket NOTE: Replace the gasket with a NEW gasket.
5Exhaust Muffler with Resonator
WARNING
Refer to Eye Protection Warning .
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution Fastener Caution .
NOTE
Replace the gasket with a NEW gasket.

Exhaust Muffler Replacement (Single)

Scheme 9

Scheme 9: Catalytic Converter Heat Shield Replacement (LDK OR LHU)
Scheme 9: Catalytic Converter Heat Shield Replacement (LDK OR LHU)
CalloutComponent Name
1Catalytic Converter Heat Shield Nut (Qty: 3) WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2Catalytic Converter Heat Shield
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Catalytic Converter Heat Shield Replacement (LDK OR LHU)

Scheme 10

Scheme 10: Exhaust Muffler Center Heat Shield Replacement
Scheme 10: Exhaust Muffler Center Heat Shield Replacement
CalloutComponent Name
Preliminary Procedures Remove the exhaust muffler. Refer to Exhaust Muffler Replacement (Dual) , Exhaust Muffler Replacement (Single) . Remove the exhaust front pipe. Refer to Exhaust Front Pipe Replacement (LHU) , Exhaust Front Pipe Replacement (LDK or LHU) .
1Fastener (Qty: 8)
2Exhaust Pipe Heat Shield

Exhaust Muffler Center Heat Shield Replacement

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions__fuel-pressure-relief) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining (Non E-85)»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions__fuel-tank-draining-non-e-85) .
  3. Remove the right rear wheel. Refer to «Tire and Wheel Removal and Installation»(/buick/regal/v-2009-2013/remont/wheel-tire-system/#tires-and-wheels) .
  4. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  5. Remove the exhaust rear muffler..
  6. Disconnect the fuel tank filler pipe quick connect fitting (1) from the chassis fuel feed pipe (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions) .
  7. Disconnect the fuel tank filler pipe retainer (3) from the chassis fuel pipe (4).
  8. Disconnect the evaporative emission canister purge pipe (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions) .
  9. Disconnect the fuel feed pipe (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions) .
  10. Have assistants support either side of the fuel tank.
  11. Place a suitable adjustable jack under the fuel tank.
  12. Remove fuel tank strap fastener (1) and straps (2).
  13. Have the assistants rest the fuel tank on the adjustable jack.
  14. Disconnect the fuel tank fuel pump module wiring harness electrical connector (1), from the fuel tank fuel pump module.
  15. Once the tank is clear of the frame, lower the fuel tank down and remove forward toward the right side of the vehicle.
  16. Detach the fuel tank shield retainer (1).
  17. Remove the fuel tank shield (1).
  1. Attach the fuel tank shield (1).
  2. Insert the fuel tank shield retainer (1).
  3. Have assistants support either side of the fuel tank.
  4. Place a suitable adjustable jack under the fuel tank.
  5. Have the assistants rest the fuel tank on the adjustable jack.
  6. Once the tank is clear of the frame, upper the fuel tank high.
  7. Disconnect the fuel tank fuel pump module wiring harness electrical connector (1), from the fuel tank fuel pump module.
  8. Install the fuel tank straps fastener (2) and fastener (1).
  9. Connect the evaporative emission canister purge pipe (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions) .
  10. Connect the fuel feed pipe (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions) .
  11. Connect the fuel tank feed pipe (2) and lock quick connect fitting (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/buick/regal/v-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-20l-repair-instructions) .
  12. Connect the fuel tank filler pipe (4) to the filler pipe retainer (3) and tighten to 4 N.m (35 lb in).
  13. Refill the fuel tank.

Scheme 11

Scheme 11: Exhaust Manifold Heat Shield Replacement (LAF)
Scheme 11: Exhaust Manifold Heat Shield Replacement (LAF)
CalloutComponent Name
1Exhaust Manifold Heat Shield Bolt (Qty: 3) WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Tighten 10 N.m (89 lb in)
2Exhaust Manifold Heat Shield
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Manifold Heat Shield Replacement (LAF)

Scheme 12

Scheme 12: Exhaust Rear Muffler Heat Shield Replacement (Left Outer-LUK)
Scheme 12: Exhaust Rear Muffler Heat Shield Replacement (Left Outer-LUK)
CalloutComponent Name
WARNING: Refer to Hot Exhaust System Warning . Preliminary Procedure Unclip heat shield from fender liner.
1Heat Shield Retainer (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Heat Shield - Left Rear Corner
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Rear Muffler Heat Shield Replacement (Left Outer-LUK)

Scheme 13

Scheme 13: Exhaust Rear Muffler Heat Shield Replacement (Left Rear Inner)
Scheme 13: Exhaust Rear Muffler Heat Shield Replacement (Left Rear Inner)
CalloutComponent Name
WARNING: Refer to Hot Exhaust System Warning . Preliminary Procedure Remove the exhaust muffler. Refer to Exhaust Muffler Replacement (Dual) , Exhaust Muffler Replacement (Single) .
1Heat Shield Retainer (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Heat Shield - Left Inner
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Rear Muffler Heat Shield Replacement (Left Rear Inner)

Scheme 14

Scheme 14: Exhaust Rear Muffler Heat Shield Replacement (Right Rear Inner)
Scheme 14: Exhaust Rear Muffler Heat Shield Replacement (Right Rear Inner)
CalloutComponent Name
WARNING: Refer to Hot Exhaust System Warning . Preliminary Procedure Remove the exhaust muffler. Refer to Exhaust Muffler Replacement (Dual) , Exhaust Muffler Replacement (Single) .
1Exhaust Heat Shield Retainer (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Heat Shield - Inner Right Rear
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Rear Muffler Heat Shield Replacement (Right Rear Inner)

Scheme 15

Scheme 15: Exhaust Rear Muffler Heat Shield Replacement (Right Rear Corner)
Scheme 15: Exhaust Rear Muffler Heat Shield Replacement (Right Rear Corner)
CalloutComponent Name
WARNING: Refer to Hot Exhaust System Warning . Preliminary Procedure Unclip heat shield from fender liner.
1Heat Shield Retainer (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Heat Shield - Right Rear
WARNING
Refer to Hot Exhaust System Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Rear Muffler Heat Shield Replacement (Right Rear Corner)

Exhaust System Description

Note. Use of non-OEM parts may cause driveability concerns.

The exhaust system carries exhaust gases, treated by the catalytic converter, through a resonator, if applicable and into the exhaust muffler where exhaust noise is lessened.

In order to secure the exhaust pipe to the exhaust manifold, a flange and seal-joint coupling is utilized. The exhaust system may utilize a slip-joint coupling design with a clamp and a U-bolt or a flange connection with a gasket.

Exhaust hangers and rubber insulators help to support the weight of the exhaust pipe along with insulating any exhaust system vibration, rattle, or noise.

Exhaust hangers also space the exhaust system away from the underbody of the vehicle and allows the exhaust system to expand as the exhaust system warms up.

Exhaust heat shields are used to protect the body and other components from damage due to the heat from the exhaust system.

The exhaust system may be comprised of the following components

  1. Exhaust manifold
  2. Exhaust pipes
  3. Catalytic converters
  4. Exhaust muffler
  5. Exhaust resonator, if equipped
  6. Exhaust tail pipe, if equipped
  7. Exhaust hangers
  8. Exhaust heat shields

Resonator

Some exhaust systems are equipped with a resonator. The resonator, located either before or after the muffler, allows the use of mufflers with less back pressure. Resonators are used when vehicle characteristics require specific exhaust tuning.

Catalytic Converter

The catalytic converter is an emission control device used to reduce hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) pollutants from the exhaust gas.

The catalytic converter is comprised of a ceramic monolith substrate, supported in insulation and housed within a sheet metal shell. The substrate may be washcoated with 3 noble metals

  1. Platium (Pt)
  2. Palladium (Pd)
  3. Rhodium (Rh)

The catalyst in the catalytic converter is not serviceable.

Muffler

The exhaust muffler reduces the noise levels of the engine exhaust by the use of tuning tubes. The tuning tubes create channels inside the exhaust muffler that lower the sound levels created by the combustion of the engine.

Illustration Tool Number/Description EN-35314-A J-35314-A Exhaust Back Pressure Gauge CH-6179 KM-6179 Heated Oxygen Sensor Remover/Installer CH-6614 MKM-6614 83 95 667 Chain-type Pipe Cutter

Scheme 16

Scheme 16: Special Tools
Scheme 16: Special Tools