An Intake Manifold Gasket Replacement cost in Alpharetta in 2024

The average cost for an intake manifold gasket replacement with CarAdvise is $69 and the range is generally between $22 and $319.

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AVERAGE COST IN Alpharetta

An Intake Manifold Gasket Replacement costs by shop in Alpharetta.

CarAdvise Customers save an average of $14 on An Intake Manifold Gasket Replacement.

POPULAR VEHICLES

Average cost of An Intake Manifold Gasket Replacement for popular vehicle models in Alpharetta:

Car Model

Avg. cost

$50

THE IMPORTANCE OF An Intake Manifold Gasket Replacement

What is an intake manifold gasket?

An intake manifold gasket is a seal between the intake manifold and the cylinder head of an engine. The gasket is necessary to ensure that air passes through the intake system without disturbance. It allows an air tight seal between these two components as they heat up and cool down under normal engine operation.

The intake manifold on an engine is a large housing, a series of passageways, that distributes and directs air (and sometimes fuel) into the cylinders inside the engine. Attached to one end of the intake manifold on a modern engine is the throttle body that opens and closes to control the amount of air pulled into the engine on its intake stroke. At the other end of the manifold at the place where it bolts to the engine is the cylinder head. When your engine is running, air is drawn through the throttle body by a vacuum (produced by the engine) and into the intake ports of the cylinder head so that it can mix with the fuel entering the combustion chamber. The intake manifold gasket seals this junction.

COMMON SYMPTOMS

How do I know if my vehicle needs a new intake manifold gasket?

On some engines, the intake manifold carries air under a vacuum produced during the intake stroke of each cylinder. With other engines, the air is pressurized. In either case, the air must not be allowed to pass through the joint between the manifold and the cylinder head, otherwise the air-to-fuel ratio will suffer. If your intake manifold also uses engine coolant to lower the temperature of the intake air, a coolant leak could result if the gasket fails.

Signs that your vehicle needs a new intake manifold gasket include:

Your engine lacks power, is sputtering, or stalls

The engine will not start at all

The check engine light comes on

Your engine knocks or "pings" under a load due to a lean air-to-fuel mixture

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FREQUENCY OF INSPECTION

How does a technician perform An Intake Manifold Gasket Replacement ?

The procedures to replace an intake manifold gasket will vary depending on the vehicle make and model, its age, and the configuration of the engine. For example, the steps to replace the intake manifold gasket on a small, transverse-mounted four cylinder engine will differ from those on an eight cylinder engine.

In general, a technician will take the following steps to replace an intake manifold gasket:



  • Disconnect the negative battery terminal
  • Drain the vehicle's engine cooling system (only if needed)
  • Remove any shields, guards, covers, or ducts to gain access to the intake manifold
  • Remove the tubing, vacuum lines, and other components connected to the intake manifold
  • In some cases, disconnect the coolant lines from the manifold
  • Unfasten and remove the throttle body assembly
  • Unbolt the intake manifold from the cylinder head on the engine
  • Remove the intake manifold
  • Clean and prep the gasket surface on the cylinder head
  • Install the new intake manifold with a fresh gasket and torque the fasteners
  • Reconnect the tubing, vacuum lines, coolant lines, wiring, and other components
  • Reinstall any shields, guards, covers, or ducts that were removed
  • Refill the vehicle with engine coolant (if needed) and bleed the cooling system of air
  • Reconnect the battery terminal
  • Start the vehicle and verify the repair by checking manifold pressure with a scan tool

OTHER QUESTIONS CUSTOMERS ASK

Can I drive with a leaking intake manifold gasket?
Driving with a faulty intake manifold gasket is not advised. That is because a leaking intake manifold can lead to a lean air to fuel mixture that causes engine damage. At the least, your engine performance will suffer along with reduced fuel economy. Your vehicle might even fail an emissions test. More than that, on some vehicles, your engine could lose a significant amount of oil or coolant as a result of a bad intake manifold.
What happens if you don't replace an intake manifold gasket?
If you fail to replace a bad intake manifold gasket, not only can oil and coolant leak from your engine (on some vehicles), but just as importantly, the ratio of air to fuel going into the cylinders will be thrown off. And a lean mixture can cause significant and serious engine damage. At the very least, your engine might run roughly, suffer poor fuel economy, and possibly stall and leave you stranded with a bad intake manifold gasket.
How do you tell the difference between a blown head gasket and a blown intake gasket?
Both a blown head gasket and a bad intake manifold gasket can cause similar symptoms. Your vehicle might run roughly, be hard to start, and lose fuel economy. Each can also cause coolant and oil to leak out of your engine - or into spots they shouldn't be inside the engine. The telltale sign of a bad head gasket, however, is when high pressure combustion gases leak into the cooling system and cause overheating and overpressurization of the cooling system. There are special tests that your mechanic can perform to determine whether this is the case.

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