How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Generous Motors Your Own Question

Generous Motors
Generous Motors, Auto Mechanic
Category: Chevy
Satisfied Customers: 323
Experience:  Mechanic for 25 years with experience on Buicks, GM Trucks, etc.
823904
Type Your Chevy Question Here...
Generous Motors is online now
A new question is answered every 9 seconds

How to change intake manifold gasket on 2000 chevrolet impala 3.4L

Customer Question

how to change intake manifold gasket on 2000 chevrolet impala 3.4L
Submitted: 7 years ago.
Category: Chevy
Expert:  Generous Motors replied 7 years ago.


HiCustomer Thank you for asking your question on Just Answer.

Intake Manifold

REMOVAL & INSTALLATION

3.1L and 3.4L Engines

These vehicles use a 2-piece intake manifold. Note that these pieces are cast aluminum. Use care when working with light alloy components.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Relieve the fuel system pressure.
  3. Drain the cooling system.
  4. Remove or disconnect the following:
    • Upper half of the air cleaner
    • Throttle body duct
  5. Drain the cooling system.
  6. Remove or disconnect the following:
    • Exhaust Gas Recirculation (EGR) pipe from exhaust manifold
    • Serpentine belt
    • Brake vacuum pipe at the intake plenum
    • Control cables from the throttle body and intake plenum bracket
    • Power steering lines at the alternator bracket
    • Alternator
    • Spark plug wires from the spark plugs and the intake plenum retainers
    • Ignition assembly
    • Evaporative Emissions (EVAP) canister purge solenoid as an assembly
    • Electrical connectors from the Throttle Position Sensor (TPS), Idle Air Control (IAC), fuel Injectors, Engine Coolant Temperature (ECT) sensor, Manifold Absolute Pressure (MAP) sensor and Camshaft Position (CMP) sensor.
    • Vacuum lines from the vacuum modulator, fuel pressure regulator and Positive Crankcase Ventilation (PCV) valve
    • MAP sensor
    • Upper intake plenum
    • Fuel lines from the fuel rail and fuel line bracket
  7. Install an engine support fixture.
  8. Remove or disconnect the following:
    • Right side engine mount
    • Power steering pump and move it aside without disconnecting the lines
    • Coolant inlet pipe from coolant outlet housing
    • Coolant bypass hose from the water pump and the cylinder head
    • Upper radiator hose at thermostat housing
    • Thermostat housing
    • Both rocker arm covers
    • Lower intake manifold bolts. Be sure the washers on the 4 center bolts are installed in their original locations

    NOTE: When removing the valvetrain components, keep them in order for installation purposes.

     

    • Rocker arm bolts, rocker arms and pushrods
    • Intake manifold and discard the gasket

    To install:

  9. Clean the gasket mating surfaces and the excess RTV sealant from front and rear ridges of engine block.
  10. Place a 3mm bead of RTV, on each ridge, where the front and rear of the intake manifold contact the block.
  11. Install or connect the following:
    • New intake manifold gasket
    • Intake manifold
    • Pushrods, rocker arms and bolts

  12. NOTE: Be sure the pushrods are properly seated in the valve lifters and rocker arms.

     

    • Rocker arm bolts. Torque the bolts to 89 inch lbs. (10 Nm) plus an additional 30 degree turn.

    WARNING
    In order to prevent oil leaks, tighten the vertical bolts before the diagonal bolts.

    NOTE: Refer to Section 1 of this manual for the lower intake manifold torque sequence illustration. The illustration is located after the Torque Specification Chart.

     

    • Lower intake manifold bolts. Apply sealant to the threads of bolts. Torque the bolts to 115 inch lbs. (13 Nm).
    • Both rocker arm covers
    • Thermostat housing
    • Upper radiator hose at thermostat housing
    • Coolant bypass hose to the water pump and the cylinder head
    • Coolant inlet pipe to coolant outlet housing
    • Power steering pump
    • Right side engine mount and remove the engine support fixture
    • Fuel lines to the fuel rail and fuel line bracket
    • Upper intake manifold. Torque the bolts to 18 ft. lbs. (25 Nm).
    • MAP sensor to upper intake manifold
    • Vacuum lines to the vacuum modulator, fuel pressure regulator and PCV valve
    • Electrical connectors to the TPS, IAC, fuel Injectors, ECT sensor, MAP sensor and CMP sensor
    • Ignition assembly and the EVAP canister purge solenoid as an assembly
    • Spark plug wires to the spark plugs and the intake plenum retainers
    • Alternator
    • Power steering lines at the alternator bracket
    • Control cables to the throttle body and intake plenum bracket
    • Brake vacuum pipe at the intake plenum
    • Serpentine belt
    • EGR pipe to exhaust manifold
    • Throttle body duct
    • Upper half of the air cleaner assembly
    • Negative battery cable
  13. Refill the cooling system.

    NOTE: An engine oil and filter change is recommended.

  14. Start the vehicle and check for leaks, repair if necessary.




JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics