Diagnose this engine knock...
Been riding the rebuilt engine for about 2000 miles now. The bike is a '92 XT600 E with a 96mm wiseco piston installed.
While riding the other day on a fully warmed up bike, I stopped a total of 2 times and each time I went to restart the bike knocked once as it fired up. Just a single knock. This has never happened to me before so I was surprised when it happened. Hasn't happened again since those two times.
Could it be the fuel? Running too lean maybe? I am riding with stock jets in the carburetor and at elevation of 5000+ ft., basically in the mountains is where most of my riding is so I thought i'd be running a bit rich, actually.
Other than that, the bike's been running great!
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