2017 Street Glide Special engine noise
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Intermediate
Joined: Nov 2023
Posts: 29
Likes: 3
From: Arizona
No it the sharp noise as I throttle up. I came from a Honda bike where the noise was crazy.
Club Member
Joined: Mar 2009
Posts: 66,126
Likes: 51,453
From: Niles Canyon Ca.
17's had a habit of popping the rear head gasket under the exhaust port, you didn't hear it but oil spot's on the trans cover was the give away.
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Intermediate
Joined: Nov 2023
Posts: 29
Likes: 3
From: Arizona
I guess the best way that I can describe it is if you were to tap the heat shield with a wrench but not having the long ring to it. In the first clip it's the second rip on the throttle that you can hear the sharp noise
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,928
Likes: 8,030
From: poway
Well I'd say it either a head/compression release leak or possibly a timing issue and it's pinging. I guess you could try some octane booster to see if it goes away.What is the history on the bike? I see the SS braded line which I don't think is stock.. Bad tune?
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Intermediate
Joined: Nov 2023
Posts: 29
Likes: 3
From: Arizona
So before I rode today I checked the exhaust connections and tightened them down a bit. They weren't super loose. Started rides and thought maybe HARLEY-CLAUSE came but it was short lived and wasn't the issue.
I do have the tuner that was used when the pipes and air intake was done so maybe need to give her a tune again
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Intermediate
Joined: Nov 2023
Posts: 29
Likes: 3
From: Arizona
Well I know it's been a little bit since I posted here but I finally got it into the shop to have a tech look things over. After several hours of looking at it the tech feels that it is most likely due to low octane gas. They are gonna change the oil and see maybe if it also might be a cause of the noise but he feels that it's the gas!
So my next tank I will go high octane and see what happens. Thanks again for all your advice!
HDF Community Team
Joined: Mar 2017
Posts: 7,880
Likes: 4,442
From: Texas
Interesting. I just came across this thread... I started to have this same noise on my 2017 after I changed the mufflers out to more free-flowing mufflers (from screamin eagle street cannons to Cobra Neighbor Haters). I chalk it up to a tuning issue on my bike since I did not adjust the tune after the change. I bought a tuner (have not installed yet) and hope that relieves the issue.
I have 2 weeks left on my 7-year warranty... Really hoping I can find a head gasket leak if it is one before the warranty is up. I've had both head gaskets fail at around 20k miles (never had this noise). It's almost 20k since then.
I have 2 weeks left on my 7-year warranty... Really hoping I can find a head gasket leak if it is one before the warranty is up. I've had both head gaskets fail at around 20k miles (never had this noise). It's almost 20k since then.
Last edited by BrandonSmith; Jan 3, 2024 at 02:59 PM.
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Thread Starter
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Intermediate
Joined: Nov 2023
Posts: 29
Likes: 3
From: Arizona
Interesting. I just came across this thread... I started to have this same noise on my 2017 after I changed the mufflers out to more free-flowing mufflers (from screamin eagle street cannons to Cobra Neighbor Haters). I chalk it up to a tuning issue on my bike since I did not adjust the tune after the change. I bought a tuner (have not installed yet) and hope that relieves the issue.
I have 2 weeks left on my 7-year warranty... Really hoping I can find a head gasket leak if it is one before the warranty is up. I've had both head gaskets fail at around 20k miles (never had this noise). It's almost 20k since then.
I have 2 weeks left on my 7-year warranty... Really hoping I can find a head gasket leak if it is one before the warranty is up. I've had both head gaskets fail at around 20k miles (never had this noise). It's almost 20k since then.
Fingers crossed that you get it figured out
HDF Community Team
Joined: Mar 2017
Posts: 7,880
Likes: 4,442
From: Texas
Yeah right now I have 5200 miles on the bike. I know that it did a lot of sitting with the prior owner, I was thinking that it might have something to do with the oil pressure at idle RPM but we shall see after the oil change along with putting higher octane gas in it.
Fingers crossed that you get it figured out
Fingers crossed that you get it figured out
My sound is identical to yours and under the same conditions too
Last edited by BrandonSmith; Jan 3, 2024 at 03:22 PM.