A few months ago I purchased a 2008 Ford Fusion SE with the 2.3l Duratec. It has a tick coming from the intake manifold area. I started to investigate and realized that the noise is coming from these flaps that sit in the intake manifold runners. They are controlled by a vacuum solenoid and open/close to better deliver power. When I take the vacuum off the solenoid, the engine is very quiet. After doing some reading in other forums, some have said to replace the solenoid and others say the entire intake manifold must be replaced. Does anyone have experience with this issue? It affects quite a few other Fords and Mazdas. I would really appreciate any advice.
https://www.youtube.com/watch?v=5gaD0TXOASQ - This video shows a 2.0 duratec with the same issue
https://www.youtube.com/watch?v=5gaD0TXOASQ - This video shows a 2.0 duratec with the same issue