Nissan 240SX Intake Manifold Gaskets Replacement at your home or office.

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Intake Manifold Gaskets Replacement Estimate for Nissan 240SX

Nissan 240SX Intake Manifold Gaskets Replacement costs $546 on average.

CarServiceEstimateShop/Dealer Price
1998 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$665.29Shop/Dealer Price$766.11 - $923.48
1997 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$561.29Shop/Dealer Price$662.20 - $819.64
1991 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$564.09Shop/Dealer Price$665.69 - $825.23
1989 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$546.27Shop/Dealer Price$645.59 - $806.88
1993 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$564.09Shop/Dealer Price$665.78 - $825.37
1994 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$564.09Shop/Dealer Price$665.69 - $825.23
1990 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$596.27Shop/Dealer Price$698.71 - $862.35
1996 Nissan 240SXL4-2.4LService typeIntake Manifold Gaskets ReplacementEstimate$587.29Shop/Dealer Price$689.43 - $847.78
Show example Nissan 240SX Intake Manifold Gaskets Replacement prices

Intake Manifold Gaskets Replacement Service

What is an intake manifold gasket and how does it work?

The intake on an engine may be made up of a lower intake manifold and an upper intake manifold or plenum. The lower intake manifold is a cast aluminum or molded plastic chamber bolted to the cylinder head of the engine. The intake manifold must be tightly sealed to the cylinder head(s) using a gasket in order to prevent air, oil, or engine coolant leaks.

When to consider replacing the intake manifold gasket:

Internal or external leaks. Due to constant temperature expansion and contraction of engine parts or overheating, the gasket’s ability to seal properly can be ruined, resulting in problems such as:

  • Internal or external engine coolant leaks. In some applications, the manifold has cooling passages within. If the manifold seal to the engine fails, coolant can leak externally or even into the engine oil crankcase, where coolant can be noticed in the engine oil.
  • Engine overheating. If the leak at the manifold is a leak of engine coolant, it can lead to engine overheating. However, there are other causes of engine overheating, so a mechanic would have to determine the actual cause.
  • External oil leaks. On some 6 and 8 cylinder engines, the intake manifold sits atop an oil-lubricated area of the engine block. If the manifold gasket has failed, oil can leak from the block to the exterior of the engine.
  • Poor engine operation, lean operation, rough idle. Vacuum air leaks into the manifold due to a defective gasket that will upset the air-fuel ratio. The engine may run poorly.
  • Check engine light. Minor leaks at the intake manifold gasket will not usually cause the check engine light to illuminate. However, as a leak persists, it may grow larger and it possible for the leak to degrade engine performance enough that it will cause a trouble code to set, which will cause the check engine light to illuminate.

How do mechanics replace the intake manifold gasket?

  • Working on a cold engine, the engine cover is removed. If the intake manifold has internal cooling system passageways, the engine coolant is drained below the level of those passageways.
  • The accelerator cable assembly and cruise control cable are removed and set aside. All electrical connections and emission and vacuum lines in the way of the intake are removed. Ignition components, such as the coil, are removed as needed. If the car has an upper plenum, that is removed and set aside.
  • If the fuel rail is bolted to the intake manifold, the supply and return connections to the fuel rail are disconnected.
  • Once all connections to the manifold are clear, the manifold is unbolted and removed from the engine.
  • Aluminum and plastic manifolds are checked with a machinist’s straightedge to ensure the surface flatness does not exceed the original equipment manufacturer’s specification. If the surface of a manifold is not flat, the new gasket will not seal properly. Plastic manifolds are checked for cracks, heat damage, and warpage.
  • Once the manifold is deemed re-usable or replaced as needed, the new gasket is applied, the manifold is put in position and the mounting bolts are torqued with a calibrated torque wrench in the OEM specified sequence. In some applications, RTV sealant must be applied in corners of the mounting surface or specified hard-to-seal spots, per the service manual.
  • All removed components are then re-installed in the reverse of the above steps.
  • Finally, the vehicle is run and checked for leaks, and test driven.

Is it safe to drive with an intake manifold gasket problem?

Yes. The principal concern with a leaking intake manifold gasket is potential damage to the engine, depending on where the leak is. Although the vehicle will generally be safe to drive, you should schedule service as soon as possible to minimize the chances of additional costly damage. If the leak involves coolant, it could lead to engine overheating damage or the coolant could contaminate the engine oil, which can damage the engine bearings. If there is an air leak to the cylinders, it can cause lean operation which could overheat the catalytic converter.

When replacing the intake manifold gasket keep in mind:

  • In engines where coolant flows through the intake manifold, a leaking intake manifold gasket can be either the cause of or result of engine overheating. If you have a leaking intake manifold gasket, and the engine has overheated, the entire engine should be inspected for damage, such as a blown head gasket. The engine cooling system thermostat should be replaced because engine overheating can damage the cooling system thermostat.
  • Some car engine designs are more likely than others to experience leaking intake manifold gaskets due to material and design issues. Your mechanic can inform you if your car represents one of these cases. Many times a re-designed gasket, or altered installation technique and torque values, will be relevant to avoid a recurrence of any leaks. Mechanics will consult Technical Service Bulletins to determine if any unique circumstance exists for your car.

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Excellent Rating

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Rating Summary
35
5
2
1
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35
5
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Nathaniel

16 years of experience
101 reviews
Nathaniel
16 years of experience
Nissan 240SX L4-2.4L - Ignition Switch - Atlanta, Georgia

Bryant

12 years of experience
562 reviews
Bryant
12 years of experience
Nissan 240SX L4-2.4L - Fuel Pump - Camby, Indiana
I was able to trust Bryant working on my vehicle that was 2000 miles away. Bryant was hired to get a vehicle of mine running and mobile that I had placed in storage nearly eight years ago. Bryant was very responsive and professional. He got my vehicle running and ensured it could be driven on and off a transport vehicle in preparation of having the vehicle shipped to me across country. He did so without attempting to upsell any additional or unnecessary work when I could not be there to supervise or verify. The day after Bryant finished work on my vehicle it was loaded and shipped across country without a single issue or complaint from the transport carrier. Thanks Bryant! Job well done.

Marco

14 years of experience
19 reviews
Marco
14 years of experience
Nissan 240SX L4-2.4L - Fuel Pump - Oceanside, California
Very respectful as well as knowledgeable

Brian

23 years of experience
612 reviews
Brian
23 years of experience
Nissan 240SX L4-2.4L - Alternator - Jacksonville, Florida
Brian is very knowledgeable, and I totally trust him to do the job right the first time.

Excellent Rating

(43)

Rating Summary
35
5
2
1
0
35
5
2
1
0
Number of Nissan 240SX services completed
473+
services done by our mechanics
TOTAL NUMBER OF EXPERT Nissan MECHANICS
1400+
experts on our platform

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