I have a 2018 Road King M8 with 14,500 miles. It started making a rattling noise on warm up and then would quit. Now it is making this rattling, clanging noise all time. Seems to come from the right side of the engine.
What is it? Maybe the cam chain tensioner? If it is, what will this cost to fix ? Help !
Just went back out an started it up again. No noise on startup, but a minute later it started the noise and it sounds like the noise (clacking) resonates in the exhaust.
Just wanted to ad this so it might help with a better diagnosis.
I have checked tightness of all exhaust chrome covers, floorboards, etc.

 

I'm guessing bad lifters.

 

Check your floor boards first before tearing into the engine.

 

I have checked the floorboards and exhaust chrome covers.
Thanks

 

Might want to post a video of it. Lifters are a possibility as Keith said.

 

If it sounds like the clip below (noise starts at 0:48), I'd concur with Kiethhu:


FC

 

This guy says oil changed exactly at 10k miles, I sure hope he’s not going that far between changes or that might be why he is clanking, lol

 

It is probably lifters , don't ride it get it fixed .Did you go 10,000 miles on an oil change ?

 

All oil changes were performed per factory service rec's:
1K
5K
10K

Perhaps it'd have been better to state, "oil was LAST changed @ 10k miles."

And yes, it was the lifters on the front cylinder.

FC

 

Check the clamp that holds the exhaust crossover underneath the engine, they are not a tight fit and rattle a little.