Harley Davidson Forums

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

2018 M8----Sumping? Failures?

Thread Tools
 
Search this Thread
 
Old Dec 19, 2018 | 10:08 PM
Share
  #371  
IdahoHacker's Avatar
IdahoHacker
Club Member
Veteran: Army
10 Year Member
Liked
Community Favorite
Joined: Jul 2014
Posts: 11,469
Likes: 3,572
From: Idaho
Riders Club Member
Default
Originally Posted by hattitude
I certainly hope you are correct, but isn't it still a little too early to tell......???

Is everyone ready to call the oil pump/plate seal the silver bullet that kills the sumping monster...???
As far as I've heard, there have been zero incidents of sumping in motors with the new part.

That's all I got.
 
Old Dec 20, 2018 | 06:21 AM
Share
  #372  
Erilflynn's Avatar
Erilflynn
Road Master
Veteran: Navy
Joined: Dec 2016
Posts: 956
Likes: 144
From: Old Bridge, NJ
Default
My question is when did the 19s get the part...heard early production bikes did not
 
Old Dec 20, 2018 | 07:44 AM
Share
  #373  
sixguns's Avatar
sixguns
Grand HDF Member
Joined: Nov 2013
Posts: 3,807
Likes: 1,488
From: SW Washington State
Default
Originally Posted by Erilflynn
My question is when did the 19s get the part...heard early production bikes did not
Does it or Doesn't it, Only your hairdresser knows for sure. Seriously, as soon as the 2019 crew start camming their bikes we will find out.
 
Old Dec 20, 2018 | 10:42 AM
Share
  #374  
IdahoHacker's Avatar
IdahoHacker
Club Member
Veteran: Army
10 Year Member
Liked
Community Favorite
Joined: Jul 2014
Posts: 11,469
Likes: 3,572
From: Idaho
Riders Club Member
Default
Originally Posted by Erilflynn
My question is when did the 19s get the part...heard early production bikes did not
The date that the new part officially got used on the production lines was in mid-October. I don't recall the exact date, but the date was shared in one of the M8 threads here at HDF.
 
Old Dec 20, 2018 | 12:38 PM
Share
  #375  
Erilflynn's Avatar
Erilflynn
Road Master
Veteran: Navy
Joined: Dec 2016
Posts: 956
Likes: 144
From: Old Bridge, NJ
Default
Originally Posted by IdahoHacker
The date that the new part officially got used on the production lines was in mid-October. I don't recall the exact date, but the date was shared in one of the M8 threads here at HDF.
Damn I'm mid August. And I have no recourse but wait and see?
 
Old Dec 20, 2018 | 12:40 PM
Share
  #376  
IdahoHacker's Avatar
IdahoHacker
Club Member
Veteran: Army
10 Year Member
Liked
Community Favorite
Joined: Jul 2014
Posts: 11,469
Likes: 3,572
From: Idaho
Riders Club Member
Default
Originally Posted by Erilflynn
Damn I'm mid August. And I have no recourse but wait and see?
Either wait and see if your engine sumps, with the obvious risk of damage, even though it will be fixed under warranty, or go to your service manager and tell him you want the new part. And, of course, you'll have to pay for it.
 
Old Dec 20, 2018 | 12:45 PM
Share
  #377  
tbob's Avatar
tbob
Outstanding HDF Member
Joined: Oct 2009
Posts: 2,791
Likes: 690
From: Smalltown,USA
Default
Originally Posted by Erilflynn
My question is when did the 19s get the part...heard early production bikes did not
Water cooled all have it, Early production oil cooled may not.
 
Old Dec 27, 2018 | 10:45 AM
Share
  #378  
Heatwave's Avatar
Heatwave
Member
Joined: Jul 2009
Posts: 4,310
Likes: 1,079
Default
Originally Posted by IdahoHacker
The date that the new part officially got used on the production lines was in mid-October. I don't recall the exact date, but the date was shared in one of the M8 threads here at HDF.
I believe the date is 10/10/18. BTW there are several reports of M8 engines sumping with the latest oil pump design (with seal). Both on HTT and CVO Harley.
 
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 Dec 27, 2018 | 11:02 AM
Share
  #379  
IdahoHacker's Avatar
IdahoHacker
Club Member
Veteran: Army
10 Year Member
Liked
Community Favorite
Joined: Jul 2014
Posts: 11,469
Likes: 3,572
From: Idaho
Riders Club Member
Default
Originally Posted by Heatwave
I believe the date is 10/10/18. BTW there are several reports of M8 engines sumping with the latest oil pump design (with seal). Both on HTT and CVO Harley.
Damn. That is NOT good news.

I haven't been on HTT for a while. I guess I better start keeping up to speed. Thanks for the update.
 
Old Dec 27, 2018 | 06:25 PM
Share
  #380  
Down South's Avatar
Down South
Seasoned HDF Member
Joined: Apr 2018
Posts: 5,947
Likes: 5,153
From: Louisiana
Default
I'll be watching as well. My build date is 9/18.
 



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 04:37 PM.

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