Why is my intake manifold cracking on my Ford Explorer?

Why is my intake manifold cracking on my Ford Explorer?

The intake manifold on a Ford Explorer is a two-piece design. There is a gasket between the upper and lower intake manifolds, which can experience dry rot or cracks over time. A crack can cause a vacuum leak, which means the air fuel mixture is off–the engine is getting more air…

What causes a vacuum leak in a Ford Explorer?

A crack can cause a vacuum leak, which means the air fuel mixture is off–the engine is getting more air than fuel–and the computer will try to compensate by pouring more fuel into the engine. You not only waste gas, but the Explorer still runs lean, with too much air and not enough fuel, if it runs at all.

What causes air to leak out of an intake manifold?

Aluminum and plastic are the most common materials used today. Intake manifolds can leak in two ways, either through coolant leaking out of the intake manifold gaskets, or air leaking into the manifold outside of the normal air passageways.

How much does it cost to fix coolant leak in Ford Explorer?

There is no factory authorized repair for the intake manifold, and replacement is required to correct the engine coolant leak and overheating issues. The average cost for a Ford Explorer Sport Trac Coolant Leak Diagnosis is between $44 -$56. Learn More

What causes intake manifold to crack on Ford 4.6L?

The problem is a sudden cracking of the intake manifold. The plastic manifold used on these 4.6L engines tend to split across the front, and break in the rear, without warning. Often this will occur with out previous symptoms. Other times a slow coolant loss may precede the failure.

What to do if your Ford intake is leaking coolant?

Closely inspect all mounting surfaces for corrosion. Especially check the coolant passages at the front and rear of the engine. Pitting in this area will result in a coolant leak. Intake manifolds are available though aftermarket sources at a much lower cost than through Ford.

Can a bad intake manifold cause engine damage?

Engine overheating. If the intake manifold gaskets leak coolant into the intake manifold the engine may overheat as a result, without any visible external leaks. Any coolant leaks should be addressed as soon as possible to prevent the possibility of serious engine damage occurring due to a bad intake manifold gasket.

What is the problem with the Ford plastic intake?

The Ford plastic intake problem. The plastic manifold used on these 4.6L engines tend to split across the front, and break in the rear, without warning. Often this will occur with out previous symptoms. Other times a slow coolant loss may precede the failure. When the intake fails, the engine coolant pours out, and the engine quickly overheats.

Can a bad intake manifold cause a coolant leak?

Coolant leaks. Another symptom of a faulty intake manifold gasket is coolant leaks. Some intake manifold gaskets also seal engine coolant, and if the gasket wears out it may lead to a coolant leak.

How can I tell if my intake manifold is leaking?

arrow-circle-right Just touch on the coolant. If there is any leak you can feel some oily thing like soap or shampoo. After confirming the coolant leak, you need to find the location of leaking. If the coolant is leaking out through the joining point of the engine and the manifold, then it happens only for the damaged gasket.

What causes vacuum leak in Ford Explorer engine?

The intake manifold O-ring gaskets commonly leak, which creates a large vacuum leak. This vacuum leak causes unmetered air to enter the engine, and the fuel system becomes insufficient to compensate for the large amount of air reaching the engine. Replacing the intake manifold gaskets corrects this concern.

What should I do if my intake manifold is leaking?

Coolant can also run down over the front or rear part of the engine, depending on how severe the leak is. If you are not sure if the intake manifold is leaking, or if a leak is coming from somewhere else, inspect more closely. Add the coolant leak test dye to the radiator fill cap.

How much does it cost to replace intake manifold in Ford Explorer?

Replacing the intake manifold gaskets corrects this concern. The average cost for a Ford Explorer Intake Manifold Gasket Replacement is between $144 -$172. Learn More