Re: Mystery flathead tapping noise, suggestions?
I built an engine for a fellow many years ago and when I started it it had a faint tapping sound. I spent weeks looking for it, actually took the engine apart. When I started it again the noise was still there. I used my new stethoscope and found the noise coming from the front timing cover. Removing the cover I inspected the gears and found a small chip out of one of them. Using a file and a magnet I dressed the chip and the noise wen away. Happy customer. See how we learn.
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