what is sumping?
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Cruiser
Joined: Feb 2019
Posts: 236
Likes: 48
From: Indiana
what is sumping?
Forgive my ignorance. been riding 40 plus yrs. Have a 2019 ultra limited coming in June. Reading of all this sumping has me second guessing myself. I currently have a 16 limited.
What exactly is sumping?
What exactly is sumping?
Cruiser
Joined: Mar 2019
Posts: 199
Likes: 94
From: Ormond Beach Fl
I also wish I knew more about it. Theres a YouTube guy who says it only happens to stage 4 bikes. Some posters here experienced it with bone stock bikes some bikes do it. Most dont. What the heck? Whats the common denominator?
Seasoned HDF Member
Joined: Sep 2009
Posts: 17,144
Likes: 6,166
From: SE Michigan
I wouldnt sweat it. Harley engine crankcases are a "dry sump" design, meaning the oil should be pumped out of the crank case and back into the oil pan. In rare cases, oil is not being pumped out, causing the flywheels to travel through too much oil. Bad juju ensues - loss of power, starvation of oil to other parts of the engine, etc etc
Tourer
Joined: Jul 2018
Posts: 412
Likes: 108
From: Shitsville
Lots of threads about sumping. I'm curious about recognizing the bogging.
Is it real obvious? Like if the timing was off on your car or had a wire off one of the plugs?
Or is it something you need to look for. "Am I sumping, I think I'm sumping" LOL
Does oil ALWAYS come out the air filter? No oil, No sumping?
Is it real obvious? Like if the timing was off on your car or had a wire off one of the plugs?
Or is it something you need to look for. "Am I sumping, I think I'm sumping" LOL
Does oil ALWAYS come out the air filter? No oil, No sumping?
Seasoned HDF Member
Joined: Sep 2009
Posts: 17,144
Likes: 6,166
From: SE Michigan
Lots of threads about sumping. I'm curious about recognizing the bogging.
Is it real obvious? Like if the timing was off on your car or had a wire off one of the plugs?
Or is it something you need to look for. "Am I sumping, I think I'm sumping" LOL
Does oil ALWAYS come out the air filter? No oil, No sumping?
Is it real obvious? Like if the timing was off on your car or had a wire off one of the plugs?
Or is it something you need to look for. "Am I sumping, I think I'm sumping" LOL
Does oil ALWAYS come out the air filter? No oil, No sumping?
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Cruiser
Joined: Feb 2019
Posts: 236
Likes: 48
From: Indiana
So now common dominator not advance warning? When it happens it happens? What's the damage done? I'm not making any mods for fear of voiding the warranty.
So I'll just get the esp. it has saved me twice before.
So I'll just get the esp. it has saved me twice before.
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Seasoned HDF Member
Joined: Sep 2009
Posts: 17,144
Likes: 6,166
From: SE Michigan
But I would say my case was definitely unusual, I wouldn't generalize from what happened to me. Hundreds of thousands of these bikes on the road, a tiny percentage have problems.
Last edited by Keithhu; Apr 12, 2019 at 09:50 AM.
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,642
Likes: 1,985
From: Cleveland Zoo
You just described my morning toilet life.
