The old Kia Sorento with the 3.5 V6 was bad about disintegrating the variable intake manifold runner linkage bushings, causing a vacuum leak. Last time I did one, a metal replacement manifold with the butterflies, linkage and actuators was $15 from Kia.
Owner reviews for intake manifold
The leak at the actuator pivot is a failure of the manifold, and the new ones are of a different design. The manifolds aren't very expensive, and it isn't a very bad job to replace.
Had to replace the intake manifold, other than that top drawer.
When I bought a new intake manifold for my 13 Eos my indy shop charged a little over $600.00 to do the walnut blasting (with before and after pics) and installing the new intake manifold. My VW dealer wanted over $900 for the carbon service. It's unbelievable the difference in idling and actual power the car has now. The car had around 72,000 miles at the time of service.
my intake manifold was replaced somewhere around 25-30k miles or so. I was told it was a revised part, and I haven't had any problems since. I'm at 45k now.
the porsche intake manifold is bad a$$
I had my intake manifold done at 18k miles, now 10k miles later the injectors went and are getting done.
I had my intake manifold replaced at 30k miles now I have 107k miles and they are telling me it needs to be replaced again due to some faulty vacuum flap....never hear problems like this with Japanese cars....
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