Grinding noise
Thread Starter
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Intermediate
Joined: Mar 2020
Posts: 44
Likes: 9
From: Oregon
Grinding noise
Hey guys,
I’ve got a 2018 883 Iron with about 11,000 miles. I recently put a K&N filter on it. I like the stock look so it was just a replacement filter, not a wazoo upgrade.
Recently on hard deceleration I can hear a gravelly sound come from the front end. I cant make out where exactly, maybe the front exhaust or the front axle. It sounds like a couple rocks rolling over metal.
It only happens between 10-25 mph on medium to hard braking. Rotors are within spec and pads are still good for a couple more thousand. The tires look good. No other indications of anything wrong with the bike. Could that be decel popping? Or do you think it might be bearings? I don’t want to stop riding to take the front end apart. I know me and it won’t stop at bearings, I’ll end up working on the bike for a month and taking everything else apart to upgrade, “while I’m in there.” Lol
I’ve got a 2018 883 Iron with about 11,000 miles. I recently put a K&N filter on it. I like the stock look so it was just a replacement filter, not a wazoo upgrade.
Recently on hard deceleration I can hear a gravelly sound come from the front end. I cant make out where exactly, maybe the front exhaust or the front axle. It sounds like a couple rocks rolling over metal.
It only happens between 10-25 mph on medium to hard braking. Rotors are within spec and pads are still good for a couple more thousand. The tires look good. No other indications of anything wrong with the bike. Could that be decel popping? Or do you think it might be bearings? I don’t want to stop riding to take the front end apart. I know me and it won’t stop at bearings, I’ll end up working on the bike for a month and taking everything else apart to upgrade, “while I’m in there.” Lol
Last edited by Bigdawg90; Apr 16, 2020 at 09:45 AM.
Hey guys,
I’ve got a 2018 883 Iron with about 11,000 miles. I recently put a K&N filter on it. I like the stock look so it was just a replacement filter, not a wazoo upgrade.
Recently on hard deceleration I can hear a gravelly sound come from the front end. I cant make out where exactly, maybe the front exhaust or the front axle. It sounds like a couple rocks rolling over metal.
It only happens between 10-25 mph on medium to hard braking. Rotors are within spec and pads are still good for a couple more thousand. The tires look good. No other indications of anything wrong with the bike. Could that be decel popping? Or do you think it might be bearings? I don’t want to stop riding to take the front end apart. I know me and it won’t stop at bearings, I’ll end up working on the bike for a month and taking everything else apart to upgrade, “while I’m in there.” Lol
I’ve got a 2018 883 Iron with about 11,000 miles. I recently put a K&N filter on it. I like the stock look so it was just a replacement filter, not a wazoo upgrade.
Recently on hard deceleration I can hear a gravelly sound come from the front end. I cant make out where exactly, maybe the front exhaust or the front axle. It sounds like a couple rocks rolling over metal.
It only happens between 10-25 mph on medium to hard braking. Rotors are within spec and pads are still good for a couple more thousand. The tires look good. No other indications of anything wrong with the bike. Could that be decel popping? Or do you think it might be bearings? I don’t want to stop riding to take the front end apart. I know me and it won’t stop at bearings, I’ll end up working on the bike for a month and taking everything else apart to upgrade, “while I’m in there.” Lol
Have you checked the Primary Chain tension recently ?
Last edited by Midpegs; Apr 16, 2020 at 11:33 AM.
Thread Starter
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Intermediate
Joined: Mar 2020
Posts: 44
Likes: 9
From: Oregon
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,491
Likes: 30,779
From: Pennsylvania
If you think it is the bearings, better to check them before they stop your riding in a bad way. Takes at most 30 minutes to jack the bike up, pull the front axle and put you finger in and check the smoothness of the bearings. Do you wash the bike at a pressurized car wash or with a power washer?
As you say it happens while braking, you can pull the caliper at the same time, check the pads and look for foreign matter.
Good luck it is your safety at risk.
As you say it happens while braking, you can pull the caliper at the same time, check the pads and look for foreign matter.
Good luck it is your safety at risk.
Grand HDF Member
Joined: Aug 2018
Posts: 4,126
Likes: 2,117
From: W. MI.
If it didn't do it before the air change and now it does, I'd say it has something to do with it. Put the stock filter back in and see if it goes away. It's always been said that if you change the air, yes. If its gonna take more air in, it needs to get out. But never seen the intake being done without the exhaust. Maybe someone that has done that will have the answer because I don't.
Road Warrior
Joined: Sep 2017
Posts: 1,609
Likes: 694
From: over the mountain
You don't get that much improvement over stock filter with a K&N filter. Disregarding what marketing says. LOL ECM still maintains the proper air fuel ratio.
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Thread Starter
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Intermediate
Joined: Mar 2020
Posts: 44
Likes: 9
From: Oregon
So I rode it up the hill yesterday. I didn’t hear the noise because there was no need for heavy braking. I put it on a stand, but could find anything wrong without taking the front tire off.
If I do remove the axle and tire, do I need to re align the front tire?
If I do remove the axle and tire, do I need to re align the front tire?
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Seasoned HDF Member
Joined: Aug 2006
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From: Pennsylvania
If you do not have a HD field service manual, you should stop right now and take it to a dealer or independent motorcycle mechanic that knows what they are doing. On offense meant.
Club Member
Joined: Jul 2013
Posts: 468
Likes: 222
From: NorCal
Since it happens on decel and under braking, it is probably not detonation. Could it be the floating rotor making noise? They do rattle around a bit, particularly when hard on the brakes. It would be worth your while to check the bearings as stated. You won't need to align your tire, but it will need to be put together correctly. As coolbreeze said, if you doubt your ability and don't have a factory service manual, seek some help on this.