Isuzu i-350 Intake Manifold Gaskets Replacement at your home or office.

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Intake Manifold Gaskets Replacement Estimate for Isuzu i-350

Isuzu i-350 Intake Manifold Gaskets Replacement costs $466 on average.

CarServiceEstimateShop/Dealer Price
2006 Isuzu i-350L5-3.5LService typeIntake Manifold Gaskets ReplacementEstimate$545.76Shop/Dealer Price$639.60 - $801.84
Show example Isuzu i-350 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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YourMechanic Isuzu Intake Manifold Gaskets Replacement Service

Average Rating

5/5

Number of Reviews

6

Rating Summary
6
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Robert

16 years of experience
71 reviews
Robert
16 years of experience
Isuzu Trooper - Intake Manifold Gaskets - Suwanee, Georgia
I was really worried,about using this service.BUT,IT WAS AWESOME. Robert really knew what to do ,his attitude was great,and he went straight to work,SAVED me $$$$.

Michael

21 years of experience
56 reviews
Michael
21 years of experience
Isuzu Trooper - Intake Manifold Gaskets - Las Vegas, Nevada
Appeared to have a great understanding of his work. The job could have been very messy but he kept things pretty clean. When finished it appeared that he double-checked his work, and left the vehicle running to test the work as completed. Thank you for your services, well appreciated.

Timothy

21 years of experience
107 reviews
Timothy
21 years of experience
Isuzu Amigo - Intake Manifold Gaskets - Puyallup, Washington
Very knowledgeable, communicates if running late, overall great guy, would recommend

Travis

14 years of experience
165 reviews
Travis
14 years of experience
Isuzu Rodeo - Intake Manifold Gaskets - Flower Mound, Texas
Travis went the extra mile with his work. I had this exact job done 18 months ago by a b&m shop. Not only did they cost more, but they did a bad job. Travis pointed out the method of repair the other guys used on a bad o-ring and repaired it properly. I highly recommend Travis for anyone on a budget and wants excellent service.

Excellent Rating


YourMechanic Isuzu Intake Manifold Gaskets Replacement Service

Average Rating

5/5

Number of Reviews

6

Rating Summary
6
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0
0
6
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Number of Isuzu Intake Manifold Gaskets Replacement services completed
66+
services done by our mechanics
TOTAL NUMBER OF EXPERT Isuzu MECHANICS
200+
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