Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
Sponsored by:
Sponsored by:

M8 problems

Thread Tools
 
Search this Thread
 
Old Aug 19, 2020 | 08:46 AM
  #2001  
jcrconst's Avatar
jcrconst
Stage I
Joined: Jun 2010
Posts: 1
Likes: 0
Angry 2019 CVO Limited Vibration

Have the NEW M8 Motor on CVO Limited 2019 severe vibration started at 5500mi has become to much to ride at idle tour pack vibrates to extreme and makes noise at idle. Had dealer pull trans out and check, and found that compensator bolt was bent and checked everything out seems to be ok Dealer put back together still vibrating. Took bike to another Dealer they took all apart could not find nothing wrong crank was .007 out, Trans .001+ Dealer says all fine but Vibration still there. Trying to sell me Harley's Vibrate after 5000 Miles. ??? You can here the noise in Primary, they say normal. Dealer has one on the floor I wanted to check that one out they blew that one off.
Factory Rep already came out says nothing wrong can't feel or hear a problem. So I have a new bike I can't ride. I think Counter Balancer is the problem.....Any Suggestion's














 
Reply
Old Aug 19, 2020 | 09:19 AM
  #2002  
mjwebb's Avatar
mjwebb
Seasoned HDF Member
15 Year Member
Photogenic
Community Builder
Top Answer: 1
Joined: Jan 2008
Posts: 13,674
Likes: 11,462
From: State of Confusion
Default

Originally Posted by jcrconst
Have the NEW M8 Motor on CVO Limited 2019 severe vibration started at 5500mi has become to much to ride at idle tour pack vibrates to extreme and makes noise at idle. Had dealer pull trans out and check, and found that compensator bolt was bent and checked everything out seems to be ok Dealer put back together still vibrating. Took bike to another Dealer they took all apart could not find nothing wrong crank was .007 out, Trans .001+ Dealer says all fine but Vibration still there. Trying to sell me Harley's Vibrate after 5000 Miles. ??? You can here the noise in Primary, they say normal. Dealer has one on the floor I wanted to check that one out they blew that one off.
Factory Rep already came out says nothing wrong can't feel or hear a problem. So I have a new bike I can't ride. I think Counter Balancer is the problem.....Any Suggestion's
next course of action is escalation procedure outlined in your Owners Manual Warranty Section, to report to Customer Service and have a Case # assigned
 
Reply
Old Aug 19, 2020 | 09:21 AM
  #2003  
strych9's Avatar
strych9
Seasoned HDF Member
5 Year Member
Liked
Community Favorite
Top Answer: 10
Joined: Aug 2017
Posts: 7,323
Likes: 11,762
From: Omaha,NE
Default

Is this your first Harley? Serious question; not a jab.
 
Reply
Old Aug 19, 2020 | 10:31 AM
  #2004  
RyanSS's Avatar
RyanSS
Advanced
Joined: Jan 2020
Posts: 59
Likes: 43
From: Central Florida
Default

So everyone else has ridden it, service manager, techs, etc and say there's nothing wrong with it? It only vibrates when you ride it? Doesn't sound right....
 
Reply
Old Aug 19, 2020 | 12:17 PM
  #2005  
Burbur2's Avatar
Burbur2
Grand HDF Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2017
Posts: 3,586
Likes: 889
From: Nowhere
Default

Originally Posted by RyanSS
So everyone else has ridden it, service manager, techs, etc and say there's nothing wrong with it? It only vibrates when you ride it? Doesn't sound right....
Most likely because THEY want it to be right and sweep it under the rug.
 
Reply
Old Aug 24, 2020 | 06:43 AM
  #2006  
skid_pimp's Avatar
skid_pimp
Road Warrior
Joined: Jul 2012
Posts: 1,996
Likes: 417
From: Cranbourne, VIC Australia
Default

Originally Posted by jcrconst
Have the NEW M8 Motor on CVO Limited 2019 severe vibration started at 5500mi has become to much to ride at idle tour pack vibrates to extreme and makes noise at idle. Had dealer pull trans out and check, and found that compensator bolt was bent and checked everything out seems to be ok Dealer put back together still vibrating. Took bike to another Dealer they took all apart could not find nothing wrong crank was .007 out, Trans .001+ Dealer says all fine but Vibration still there. Trying to sell me Harley's Vibrate after 5000 Miles. ??? You can here the noise in Primary, they say normal. Dealer has one on the floor I wanted to check that one out they blew that one off.
Factory Rep already came out says nothing wrong can't feel or hear a problem. So I have a new bike I can't ride. I think Counter Balancer is the problem.....Any Suggestion's
If something is wrong with your bike and they don't want to fix it, then just ride the **** out of it. Let the problem continue to get worse, and then find a dealer that will actually take care of you.
 
Reply
Old Sep 1, 2020 | 12:20 PM
  #2007  
westmw35's Avatar
westmw35
Stage I
Joined: Sep 2020
Posts: 1
Likes: 0
From: seattle
Exclamation What was the solution to the fuel leak?

What was the solution to the fuel leak???? I'm having the same issue except while its running in the same location.

Originally Posted by army_eod
Have a 2018 Heritage 107 with 1700 miles. You read that correctly.
I have smelled gasoline lately and today I just noticed that when I shut the engine down, I get a fuel leak at the rear left of the engine case. A few drops right after shut down. I looked and cannot see where it comes from.
However, I am not happy that I have this issue and I am waiting for the dealer to come trailer it back to fix. I have extended warranty.
Does anybody else have this issue?????
 
Reply
Old Sep 1, 2020 | 05:46 PM
  #2008  
Redrodyankneck's Avatar
Redrodyankneck
Stellar HDF Member
10 Year Member
Photogenic
Liked
Top Answer: 1
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Default

The vent for the fuel tank is located on the left side of the bike, it is tucked in along the frame and stops short of the belt. When the bike is hot and you shut it down the expanding gas fumes exit the end of this tube. On my 2017 I actually extended this hose down under the bike because the powder coating on the frame was getting soft in that area. . When I pulled in to the garage after a ride on a summer day you could actually see the fumes escaping under the bike and it wasn't uncommon to have a few drops of fuel hit the floor.
Not saying this is your problem but it's worth checking out.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Sep 4, 2020 | 03:35 PM
  #2009  
LowDave14's Avatar
LowDave14
Advanced
Joined: Jun 2020
Posts: 88
Likes: 17
From: Buena Park, Ca.
Default

I got a 20 lowrider-s, no issues. A lot of smack talking from old timers about 8's running hot. I come from metrics so every hd is hot to me.
I did recently find out what a handful of rpm does in 4th........hang on !!!
 
Reply
Old Oct 3, 2020 | 02:25 PM
  #2010  
Bohemian's Avatar
Bohemian
Cruiser
Joined: Aug 2008
Posts: 161
Likes: 7
From: Las Vegas
Default Milwaukee 8 Hard Starting Problem

2018 FLRT Freewheeler M8 107
5,400 miles I'm the original owner.

No problems whatsoever till this am and 1st start of the day and every start since, is hard to start, and getting harder to start and it's running worse every start today.

I ride it everyday freeway in am, city streets in the afternoon.

It's getting so hard to start I don't think it will.

Anyone run into this issue on a M8 yet?

I'm fixing to take it to dealer pretty quick.

thanks in advance.
 
Reply



All times are GMT -5. The time now is 04:54 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE