Thread: Unidentified engine sound

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While cruising around to check my new distributor's ignition timing I was greeted to this sound.

http://s990.photobucket.com/albums/a...t=MVI_0037.mp4

I can't quite place where the sound is coming from. And I am reluctant to leave the engine running to identify it's origin.

Any help is appreciated

Pull your fan belts and see if it still makes that noise. Also you can use a mechanics stethoscope, a long screwdriver or something similar to pinpoint the noise.

had similar noise on my suburban couldn't find it figured it would show its face some day. Yep I found it while changing oil I looked up and the donut was leaking I thought I had a rod or lifter wrist pin piston slap nope just the donut replaced it and mama is real happy now