So I was doing some general engine stuff yesterday, antifreeze, checking hoses, randomly check plugs, just making sure every thing is tight under the hood, (just to be sure.) and I hear a weird kind of click from the #7-#8 cylinder area. weird...

after checking the number 8 plug which was fine. (couldn't check the 7 for time reasons, doing that today) I restart the motor and check to listen again and now I can hear a slight whistle from that side too. Great.

none of this can be head inside the car, only at idle when I'm next to the engine.

I'll try and get a video or sound bite up so you can see exactly what I'm talking about.

 

very possible its a exhaust leak. if its not the manifold gasket, or cracked manifold, look around were the manifold connects to the piping. sometimes they leak with age

 

For everyone that has encountered some type or hard to find noise, a cheap stethoscope from a tool/parts store would be very helpful. And if you pull the probe off the end of the tube and use just the tubing you can pin point w/ great accuracy the location of a vacuum or exhaust leak!!!

 

sweet. Thanks for the hint.

I doubt the manifold is cracked (its BBK, not original equipment, its not the newest part on the car by far but its not that old either) So I'm guessing leak on the head side or the collector side. I acctually kind of hope its a gasket...I can change a gasket.