bike chirps while accelerating

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Nov 7, 2018 | 07:05 PM

#41

e6fmf

Road Master

Joined: Feb 2008

Posts: 832

Likes: 125

From: Parris Island

Check your belt. Feel for loose teeth. push in each direction, may be broken on one sides and will lay back down looking normal.

Nov 8, 2018 | 08:46 AM

#42

btsom

Grand HDF Member

Joined: Jan 2012

Posts: 4,459

Likes: 2,900

From: Oklahoma

Surprised no one has mentioned the heat shields on the header pipe. Obviously, they go through lots of heat cycles Expansion and contractions) one after after EVERY engine start. The sound that comes to my mind described a chirp is from dry metal to metal contact, though dry rubber comes close.

Nov 8, 2018 | 10:23 AM

#43

cwsharp

Stellar HDF Member

Joined: Mar 2006

Posts: 2,395

Likes: 153

From: Utah

Quote:

Originally Posted by Bearcat1

Yeah, that. Mine chirped and drove me crazy for a while until I figured out it was a lose belt. Tightned it up to proper tension and was good after that.

Yeah... my belt had missing 'teeth' and did that.

Nov 13, 2018 | 07:44 AM

#44

Hecklerboy

Road Warrior

Joined: Mar 2009

Posts: 1,739

Likes: 959

From: West Virginia

Mine was "chirping" whenever I hit a small bump and sometimes at idle.
Turns out it was the rubber muffler isolation mounts.
Those things wear out quickly and will start chirping.
Luckily they only cost $3 or $4 at the Harley shop. Easy to replace.

Nov 13, 2018 | 06:25 PM

#45

dickey

Seasoned HDF Member

Joined: Mar 2010

Posts: 19,990

Likes: 6,133

From: Florida

Betcha gonna find it's the muffler rubber.
Or, a boid caught in the woiks.

Nov 13, 2018 | 08:01 PM

#46

yiride

Advanced

Joined: Jul 2010

Posts: 81

Likes: 23

From: Ontario

Had a 09 FLHTC . It had a chirp on accel and decel also . It tokk almost two years to find it. On the bolt on rear frame section check to see if there is a rust streak on the mounting bolts. On mine there was a bit of rust at one of those bolts. I loosened all 6 bolts a bit and re tightened those bolts . The chirp went away.I assume that frame section was a little bit bound up at assembly which was corrected with retightening .

Jun 17, 2021 | 06:18 PM

#47

Spec4

6th Gear

Joined: Jun 2021

Posts: 12

Likes: 1

From: CO

Hey Rucker was it your belt then? My sportster does that also and I'll check it tomorrow. last year I tightened it up. I don't ride that much(5 miles to/from work in the summer).