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what is the function of the intake manifold holes what does it do on 1998 Lincoln Navigator

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what is the function of the intake manifold holes what does it do
(1) Answer
The 'intake' manifold sucks in air through the throttle body then to the manifold runners or "holes" as you call them and distributes it to the individual cylinder head intake ports, in this case there are eight. This is what provides the engine with air so it can be mixed with fuel for combustion. I hope those are the holes you were inquiring about.