I have a 2012 lxr 155 ho Pitster pro. It has the zongshen 155 engine in it. Bought it new. Riding it on and off. Didn’t ride it for a few years. Got it going again recently, running great besides the knocking in the engine. I’ve checked the timing, and it’s good. Checked the timing chain, looks perfect. Checked the tensioner, looks good. I adjusted the valves to (intake = 0.004) and (exhaust = 0.006) with feeler. Knocking doesn’t sound like it’s bottom end, but it’s hard to tell. Also the knocking seems more prominent on the shifter side of the engine. I pasted a link to an audio recording of the knocking in idle. If anyone can help, I’d greatly appreciate it.
Audio of Knocking Noise
Audio of Knocking Noise
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