Hello all just now fired up my 2.4L engine after a complete rebuild, started up no problems runs smooth but i am getting a high pitch sound coming form the intake manifold and throttle body. has any one ever heard this sound before? not lights on the dash every thing is good except the sound. check out the link below..
Intake manifold could be air leaking near a gasket......I was working on an Accord.....replaced the upper intake manifold.....there was a high pitch sound coming from the engine afterwards.....sounded almost like a squeak or a whistle......I checked all the intake bolts and one of them was loose. I tightened it half a turn and the noise stopped. I've heard similar sounds coming from the "quick-connect" vacuum lines on fords..
Thanks guys, You where right! was having a problem installing the intake manifold, was fighting it and cut the gasket a little on the left side. To be sure I used some carb cleaner around it like tech II was saying and right on the left side there was a difference after spraying the cleaner there. would have never guess it was that. Wow. check out the links below>