Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

Leaking fuel

Thread Tools
 
Search this Thread
 
Old Oct 30, 2015 | 01:39 AM
  #1  
Bucky Ross's Avatar
Bucky Ross
Thread Starter
|
Advanced
Joined: Jun 2015
Posts: 60
Likes: 1
From: Oahu, HI
Default Leaking fuel

Hey there! I have a 1997 fxdl I bought used about 6 months ago. Just this week it started leaking fuel constantly out of the fuel overflow valve as well as from the hose that connects the two heads. This continues even with the petcock in the off position. It seems to run fine but I haven't ridden it in the past few days since this started. Any help is appreciated! TIA
 
Reply
Old Oct 30, 2015 | 07:01 AM
  #2  
skinman13's Avatar
skinman13
Outstanding HDF Member
Veteran: Navy
Joined: Dec 2012
Posts: 2,557
Likes: 235
From: Texas
Default

You have not done anything to the bike or fuel system but fill it up, right?

My son's LR overflows through the atmosphere vent when he overfills since I put on a new tank. I think I might have reversed the vapor valve when I put it all back together or his new gas cap is not vented...not sure which yet, he just told me about it...
 
Reply
Old Oct 30, 2015 | 01:18 PM
  #3  
Bucky Ross's Avatar
Bucky Ross
Thread Starter
|
Advanced
Joined: Jun 2015
Posts: 60
Likes: 1
From: Oahu, HI
Default

The only thing I've done recently is change the oil and install a new 2>1 exhaust that was maybe a month ago.
 
Reply
Old Oct 30, 2015 | 01:34 PM
  #4  
Tommy C's Avatar
Tommy C
Seasoned HDF Member
10 Year Member
Joined: Oct 2015
Posts: 13,586
Likes: 34,958
From: Pine Flat Dam/South Bay Area, CA
Default

Maybe a bad diaphragm in the vacuum operated petcock?
 
Reply
Old Oct 30, 2015 | 05:01 PM
  #5  
DesertDyna's Avatar
DesertDyna
Road Captain
Joined: Mar 2010
Posts: 676
Likes: 2
From: Glendale, AZ
Default

Originally Posted by Bucky Ross
Hey there! I have a 1997 fxdl I bought used about 6 months ago. Just this week it started leaking fuel constantly out of the fuel overflow valve as well as from the hose that connects the two heads. This continues even with the petcock in the off position. It seems to run fine but I haven't ridden it in the past few days since this started. Any help is appreciated! TIA
Its a carbed bike...you sure it doesnt eventually stop when you close petcock? Make sure its really closed...start the bike and run it out of fuel..then drop the fuel bowl on the carb. bet you have stuff in there clogging things up, and your floats are either stuck or bad (filled with fuel)...which would keep them from closing the valve.
 
Reply
Old Oct 30, 2015 | 05:35 PM
  #6  
apples402's Avatar
apples402
Road Captain
10 Year Member
Photogenic
Joined: Nov 2013
Posts: 556
Likes: 40
From: nebraska
Default

It is probably a stuck float or bad petcock. What hose between the heads? Post this in the EVO section lots of help there for your bike.
 
Reply
Old Nov 4, 2015 | 04:53 PM
  #7  
Bucky Ross's Avatar
Bucky Ross
Thread Starter
|
Advanced
Joined: Jun 2015
Posts: 60
Likes: 1
From: Oahu, HI
Default

Sorry, not the hose. The fuel intake coming from the carburetor. I'm currently trying to clean the inside of the gas tank as i discovered a bunch of rust in there. I'm also waiting on a rebuild kit for the carb. And I'll be replacing the gaskets where the fuel enters the heads. Hoping all that fixes the problem.
 
Reply
Old Nov 4, 2015 | 06:46 PM
  #8  
skinman13's Avatar
skinman13
Outstanding HDF Member
Veteran: Navy
Joined: Dec 2012
Posts: 2,557
Likes: 235
From: Texas
Default

that sounds like something is mucked up in the float. My 2001 SG CV-40 vents fuel to the intake and not overboard like a CV 44. I had the float stick once and damn near hydraulic-lock my cylinder. I caught it when it stalled on the initial crank over and pulled the plugs and blew a lot of gas out. Damn lucky I didn't blow a head gasket or damage the heads. Since then, I replaced the valve, inspected and adjusted the float...and now turn off the petcock.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

10 Most Awkward-Looking Motorcycles Ever Built

 Verdad Gallardo
story-1

Jason Momoa Is Turning Classic Harleys Into PHEVs

 Verdad Gallardo
story-2

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-3

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-4

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-5

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-6

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-7

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-8

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

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Nov 4, 2015 | 09:15 PM
  #9  
jaxdwg's Avatar
jaxdwg
Road Warrior
Joined: May 2005
Posts: 1,301
Likes: 24
From: Minden LA
Default

Originally Posted by Bucky Ross
Hey there! I have a 1997 fxdl I bought used about 6 months ago. Just this week it started leaking fuel constantly out of the fuel overflow valve as well as from the hose that connects the two heads. This continues even with the petcock in the off position. It seems to run fine but I haven't ridden it in the past few days since this started. Any help is appreciated! TIA
Sounds to me like the needle&carat is leaking in the carb and the petcock may be bad too
 
Reply
Old Nov 4, 2015 | 09:22 PM
  #10  
jaxdwg's Avatar
jaxdwg
Road Warrior
Joined: May 2005
Posts: 1,301
Likes: 24
From: Minden LA
Default

Originally Posted by Bucky Ross
Sorry, not the hose. The fuel intake coming from the carburetor. I'm currently trying to clean the inside of the gas tank as i discovered a bunch of rust in there. I'm also waiting on a rebuild kit for the carb. And I'll be replacing the gaskets where the fuel enters the heads. Hoping all that fixes the problem.
Fuel enters the head? The air/fuel enters through the intake manifold to the heads. If fuel is leaking at the manifold, you have an intake leak too. I don't see how it can run good with all that happening. Are you explaining your problem correctly? 3 things with the fuel all at once, doesn't compute.
 
Reply



All times are GMT -5. The time now is 04:55 AM.

story-0
10 Most Awkward-Looking Motorcycles Ever Built

Slideshow: Not every motorcycle can be a design icon, and these machines prove that bold styling doesn't always age gracefully.

By Verdad Gallardo | 2026-06-12 11:58:41


VIEW MORE
story-1
Jason Momoa Is Turning Classic Harleys Into PHEVs

Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.

By Verdad Gallardo | 2026-06-10 17:18:58


VIEW MORE
story-2
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-3
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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