Banging in Engine - Honda Goldwing Forums
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post #1 of 18 (permalink) Old 07-10-2019, 09:48 AM Thread Starter
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Banging in Engine

I have a 2006 Goldwing. It runs great, clutch works great, Oil changes done regularly.
Now the question I have is:
When the bike is running it makes a loud knocking sound (almost like a gear that is missing a tooth) underneath the bike. I am no mechanic but someone told me that it could be the " Bottom End ". I don't know what he meant and he couldn't really explain but it does it when I start moving and when I am idling. Loud, almost like a banging sound underneath. Still runs strong and doesn't slip in gears.
Any Suggestions?
Since then my wife said, " Don't put money in to it since it has 104,000 miles on it ". I told her that's nothing for a wing but she did say ", Just buy a new one ".....I wasn't going to argue so i went out and bought a brand new 2016 with 0.3 miles on it. lol...I do want to get the other one fixed though and sell it.
Thank you in advance for your suggestions.
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Last edited by 2016blkgoldwing; 07-10-2019 at 09:51 AM. Reason: wanted to ad something on thread.
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post #2 of 18 (permalink) Old 07-10-2019, 09:53 AM
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I steady Knock could be many things. Bottom end or crank bearing, rod bearing, if it does this when cold only then it could be piston slap. Also misfire on one plug can mimic this noise. Best would be to post a recording of the noise.

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post #3 of 18 (permalink) Old 07-10-2019, 11:05 AM
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Last summer on our way back from Wyoming my Buddy Ray H's 1800 started banging and chattering in 1st gear. He took it to a Honda dealer and they had to pull the engine to check out the transmission. They found a screw. That they could not find a match for on any parts list in the manual. Cost him $5000.00 plus ???????
It started doing this right after he dropped on it's left side on a down angle.
Still have no idea how it got there. I wish he had ask for the screw when he got the bike back.

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post #4 of 18 (permalink) Old 07-10-2019, 02:01 PM
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Seems like he was pretty much screwed in more ways than one.

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post #5 of 18 (permalink) Old 07-10-2019, 02:24 PM
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WE can't figure out if it wasn't a Honda screw where did it come from and how did it get in there.????

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post #6 of 18 (permalink) Old 07-10-2019, 04:39 PM
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i worked at a Harley shop back when AMF took over and workers at the plant would put bolts, washers and even wrenches in the transmissions. Different bunch.

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post #7 of 18 (permalink) Old 07-10-2019, 06:05 PM
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Quote:
Originally Posted by ETC View Post
i worked at a Harley shop back when AMF took over and workers at the plant would put bolts, washers and even wrenches in the transmissions. Different bunch.
WAY back in 1960 in my senior year in High School I work part time in the Auto body shop at the Cadillac dealer in Allentown, Pa. One of my jobs was finding and fixing the squeaks and rattles in under warranty Caddies. I found a couple door rattles that turned out to be Coke cola bottles that had a couple small nuts and bolts in them. The guys at the plant must have thought it was funny.

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post #8 of 18 (permalink) Old 07-10-2019, 06:26 PM
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I know who did it but you'll never catch me.
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post #9 of 18 (permalink) Old 07-10-2019, 07:11 PM
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You may want to try to isolate the knock. Take a 3’ long piece of hose. Hold one end to your ear and then place the other end at various locations in the engine while it is running. This may help in pinpointing the source but with a lower end knock you’ll end up having to open up the crankcase to find the exact cause.

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post #10 of 18 (permalink) Old 07-10-2019, 09:56 PM
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I've never had luck doing that and always end up with a big black circle on my ear.
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