Engine knocking/rattling noise
Tourer
Joined: Jul 2013
Posts: 389
Likes: 9
From: MT
Thats an interesting sound, hard to say without being there, but Id say its something rattling like your indy says.(?) I take it that is the side & location that has the most sound to it...
Outstanding HDF Member
Joined: May 2014
Posts: 2,449
Likes: 6
From: Memphis
I had similar sound to that and it was loose 02 sensor.
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
This is interesting. I am running a rb lsr 2-1 and I ordered it wi th 02 bungs for autotune but it came with plugs in. I have never checked there torque.
Sponsor
Joined: Dec 2007
Posts: 12,084
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If a valvetrain-type noise increases as the engines warms up........HUGE chance it is a lifter as I stated in an earlier post, if an engine noise goes away after warm up........good chance of a loose bore on a forged piston, is so equipped.
No google "research" needed here for that.
Scott
No google "research" needed here for that.
Scott
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
If a valvetrain-type noise increases as the engines warms up........HUGE chance it is a lifter as I stated in an earlier post, if an engine noise goes away after warm up........good chance of a loose bore on a forged piston, is so equipped.
No google "research" needed here for that.
Scott
No google "research" needed here for that.
Scott
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
You did the machine work for me 
it was by no means loose and it only has about 800 miles on the bore. But when my pump failed I immediately shut the bike off. I was just off idle when the light came on. Could running a lifter out of oil cause the lifter to become noisy?
it was by no means loose and it only has about 800 miles on the bore. But when my pump failed I immediately shut the bike off. I was just off idle when the light came on. Could running a lifter out of oil cause the lifter to become noisy?
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
well i put new ss lifters in and inspected my rocker boxes/rocker shafts/rocker everything and i didnt see any sign of anything..even with new ss lifters my noise still remains. seems to be less noisy the first time i ride it after a complete cool down overnight, after first warm up and ride to work when i got out on lunch its louder and the ride home at night is loud also. im at a loss? im thinking a possible cylinder? idk the bike runs pristine it just has a damn noise. its especially noticeable under a load. 5th gear roll on the throttle, almost a clanking.
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