Engine Mechanical Topics Discussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.

Serious backfires

Thread Tools
 
Search this Thread
 
Old Jun 13, 2014 | 11:12 AM
  #1  
huskerBG's Avatar
huskerBG
Thread Starter
|
Advanced
Veteran: Army
10 Year Member
Liked
Loved
Joined: Mar 2014
Posts: 62
Likes: 39
From: Lincoln, NE
Default Serious backfires

New Harley owner/rider. Experiencing significant backfire when down-shifting. Is this common?
 
Reply
Old Jun 13, 2014 | 12:02 PM
  #2  
Hillsidecycle.com's Avatar
Hillsidecycle.com
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
Default

Exhaust leaks?
Too much fuel on decell if EFI?
Scott
 
Reply
Old Jun 13, 2014 | 07:00 PM
  #3  
Riffraff123's Avatar
Riffraff123
Road Captain
10 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2013
Posts: 733
Likes: 318
From: Rochester NY
Default

Manifold leaks, air/fuel mixture or timing. Not common.
 

Last edited by Riffraff123; Jun 13, 2014 at 07:02 PM. Reason: Adding something
Reply
Old Jun 15, 2014 | 09:41 AM
  #4  
huskerBG's Avatar
huskerBG
Thread Starter
|
Advanced
Veteran: Army
10 Year Member
Liked
Loved
Joined: Mar 2014
Posts: 62
Likes: 39
From: Lincoln, NE
Default

Thanks, Scott and Riffraff! Will be making an appointment with my local mechanic.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
slowrollin
Touring Models
20
May 8, 2016 07:16 PM
polish hammer
General Topics/Tech Tips
3
Jul 6, 2015 12:59 PM
rob0225
General Harley Davidson Chat
8
Jul 29, 2013 10:52 PM
blueduramax
Touring Models
9
Jul 16, 2010 06:23 PM
SoftailBrian
Exhaust System Topics
2
Mar 4, 2006 05:01 AM




All times are GMT -5. The time now is 12:36 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE