loss of power, knocking engine noise


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Husarz
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Motorcycle: 2006 Gl1800

loss of power, knocking engine noise

Post by Husarz » Thu Aug 02, 2018 9:05 pm



I am looking at buying 2006 GL1800 with 200,000 miles. Very attractive price due to the mileage. The bike looks great, a gentleman selling it very trustworthy, bought it brand new, very meticulous at maintenance. Still rides it daily but just bought 2014 GW as a backup. There is a knocking noise that apparently goes away (perhaps masked by road noise?) at higher speeds. He reports noticeably less power than before although still can get to 80 miles/hr, it just takes longer. He had spark plugs and air filter replaced but it didn't help. I'll be calling his mechanic to see how much it would cost to diagnose it but would appreciate any advice. That would be my first Gold Wing.



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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Fri Aug 03, 2018 9:25 am

Is it possible to make a vid of it, post it on YouTube and put a link here for us to help ??? The better the recording of the noise the better for all.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Fri Aug 03, 2018 12:25 pm

Thank you for the suggestion. Will try to do it but the bike is 2 hrs away so it may take some time.

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mterraci
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Re: loss of power, knocking engine noise

Post by mterraci » Fri Aug 03, 2018 5:37 pm

I'd be hesitant unless you know what's going on. There are too many other good Goldwing's for sale out there.
I found a used one, very well maintained, with less than 20,000 miles on it. Runs like a brand new bike.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Sun Aug 05, 2018 5:13 pm

I should probably describe it more accurately as sluggish acceleration.

Techdude2000
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Re: loss of power, knocking engine noise

Post by Techdude2000 » Sun Aug 05, 2018 11:04 pm

Not sure about the noise, but if it’s developing a connection issue within the FI system’s power circuits, it will run like crap. He needs to have someone measure the power on the black/yellow wires at the ECM’s connectors. If it’s more than 1V lower than the battery post voltage, the bad connection in C25 needs to be addressed. Google “gl1800 C25” and there’s lots to read about from another 1800 board.

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AZgl1800
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Re: loss of power, knocking engine noise

Post by AZgl1800 » Mon Aug 06, 2018 7:39 am

~John

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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Mon Aug 06, 2018 10:34 am

Husarz wrote:
Sun Aug 05, 2018 5:13 pm
I should probably describe it more accurately as sluggish acceleration.
If there is no FI light coming on, sluggish on acceleration is usually do to "common" ignition problems such as spark plugs, plug wires, and coil(s). However, usually a misfire can be felt too. Other things that can effect performance is an extremely plugged air filter (rats nest).

Wings that perform poorly under acceleration often have all kinds of engine noises. Often the performance problem needs fixed first to really know more about the engine noises. What often happens is that once they run well the noises of concern go away. The noise that I'm referring to is actually caused from a "snapping" ADG.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Mon Aug 06, 2018 7:57 pm

I'll try to do a video on Wednesday. Spark plugs and air filter were replaced in an attempt to correct the problem. Coils, I believe, too but I'll verify that.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Thu Aug 09, 2018 1:46 am

here is the video. you can here the knocking noise at the beginning and the end of the video. Too much wind during the ride to hear the engine.


and uneven idling (during this video I am filming the 2006 but we are talking about his 2014 F6B with 48K miles- the engine sounds so much smoother):


Last edited by Husarz on Thu Aug 09, 2018 2:00 am, edited 2 times in total.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Thu Aug 09, 2018 1:53 am

The problems started in June. since then spark plugs were changed and air filter. Coils on 5th and 6th cylinder were done in 2015. The battery is 2 years old.

Techdude2000
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Re: loss of power, knocking engine noise

Post by Techdude2000 » Thu Aug 09, 2018 6:15 am

Have you watched the battery terminal voltage while it’s idling? The sound I’m hearing when you back off of the curb sounds very much like the alternator or the ADG that drives it. Definitely not normal.

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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Thu Aug 09, 2018 7:25 am

Is your knock there only during warm up ???

What brand and weight oil are you using ???

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Thu Aug 09, 2018 12:53 pm

I believe it's Amsoil. I don't have the possession of the bike and the bike is 2hrs away so some of the questions are hard to answer. I am trying to decide if I should get the bike. I can get it for an incredible price for a 2006 due to over 200K miles on it and the noise but I want to be reasonable sure it is not something catastrophic, requiring an engine rebuilt or something like that. The owner put another 2,5K miles on it since the problem started so it's driveable. If I purchase it, than of course I would want to fix it, whatever it is.
Last edited by Husarz on Thu Aug 09, 2018 1:22 pm, edited 1 time in total.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Thu Aug 09, 2018 1:01 pm

On the 1st video it seems that the knocking is gone after the ride, just kind of whining noise. I remember the owner saying before that after a while, at higher speeds the knocking seems to go away (unless is covered by wind noise). I would certainly get the bike if it just requires a new alternator or something of that scope.

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Re: loss of power, knocking engine noise

Post by Husarz » Thu Aug 09, 2018 1:02 pm

No FI light on, no codes. John, thank you for the link, C25 connector is something I'd check for sure once the bike is in my possession.

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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Thu Aug 09, 2018 2:03 pm

To me it sounds like ADG noise. If your able to hear it while riding, that is not a good thing. If it were my bike, the first think I would do is install Honda's GN4 10w-30 oil in it to see if the noise changes. Many use Amsoil, and occasionally it causes issues. Because of that, I no longer recommend it. If the ADG needs replace, the repair is probably more then $3000.

All though I would not buy one with high milage like that, if I did, it have to be a lot less then $2500. I have one in my shop now thats a 2003 with 10k on it that has been poorly stored. It turns over, but at times it will not start. I think the new owner paid $1,350 for it.

Hopefully some of that info helps.

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Fri Aug 10, 2018 1:32 pm

Thank you Goldwingrgreg. The price would be around $1500USD which in Canada is very rare even for 1982-1985. It seems that for most, even the oldest, Wings asking price starts at $1700 and up. '06 usually are well over $8K USD. However problem with ADG would stop me from getting this one.

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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Fri Aug 10, 2018 10:01 pm

Husarz wrote:
Thu Aug 09, 2018 1:46 am
here is the video. you can here the knocking noise at the beginning and the end of the video. Too much wind during the ride to hear the engine.


From my post above "If there is no FI light coming on, sluggish on acceleration is usually do to "common" ignition problems such as spark plugs, plug wires, and coil(s). However, usually a misfire can be felt too. Other things that can effect performance is an extremely plugged air filter (rats nest).

Wings that perform poorly under acceleration often have all kinds of engine noises. Often the performance problem needs fixed first to really know more about the engine noises. What often happens is that once they run well the noises of concern go away. The noise that I'm referring to is actually caused from a "snapping" ADG."

Are you sure that's a "good running Wing" ??? Is that miss-firing I hear at the 40-41 sec mark ??? You said the problem started when the plugs were replaced ... incorrect plugs, plug wires crossed or pinched ???

Husarz
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Re: loss of power, knocking engine noise

Post by Husarz » Sun Aug 12, 2018 1:14 pm

the spark plugs were changed after the problem has started in attempt to fix it, same with the air filter. I am not sure about misfire noise. So if there is a misfire that would lead away from ADG failure suspicion? From what I remember the owner said one or two old plugs were in bad shape when they changed them.

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Re: loss of power, knocking engine noise

Post by Husarz » Sun Aug 12, 2018 4:00 pm

Looking up ADG problem I read that there is a test for it the 06 upwards ? Would Honda mechanic be able to test it without me shelling major $$?

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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Sun Aug 12, 2018 5:19 pm

Husarz wrote:
Sun Aug 12, 2018 4:00 pm
Looking up ADG problem I read that there is a test for it the 06 upwards ? Would Honda mechanic be able to test it without me shelling major $$?
Labor will probably be more then 2hrs and less then 3. Any Honda dealer should have that tool ... however, that does not mean that they do.

Techdude2000
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Re: loss of power, knocking engine noise

Post by Techdude2000 » Sun Aug 12, 2018 5:50 pm

Most dealers don’t have the tool and if they do you would have to pay to have the alternator pulled out and reinstalled. Even if the ADG is bad and is the source of the noise, it doesn’t usually cause the engine to have poor acceleration and/or performance.

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Asphaltmaniac
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Re: loss of power, knocking engine noise

Post by Asphaltmaniac » Sun Aug 12, 2018 6:34 pm

GoldWingrGreg wrote:
Mon Aug 06, 2018 10:34 am
Husarz wrote:
Sun Aug 05, 2018 5:13 pm
I should probably describe it more accurately as sluggish acceleration.
If there is no FI light coming on, sluggish on acceleration is usually do to "common" ignition problems such as spark plugs, plug wires, and coil(s). However, usually a misfire can be felt too. Other things that can effect performance is an extremely plugged air filter (rats nest).

Wings that perform poorly under acceleration often have all kinds of engine noises. Often the performance problem needs fixed first to really know more about the engine noises. What often happens is that once they run well the noises of concern go away. The noise that I'm referring to is actually caused from a "snapping" ADG.
I just replaced my ADJ at 185K. Mine did not "knock" There was growling noise coming from the vicinity of the alternator. In my case it was loudest just as I stopped for a light/stop sign when fully warmed up. Then decreased as the engine idled. My 1st question was is this thing going to fly apart and sprinkle metal through out the engine..The answer was no. He also told me it can stay just the way it is for many thousands of miles before it gets louder. I elected to strip the bike down to the engine and had Honda pull the engine and replace the ADG. I have almost 5K miles on it since May and ahhhhhhh my wing sounds like a wing again!
But anyway just where is the "knocking" noise coming from?????

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GoldWingrGreg
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Re: loss of power, knocking engine noise

Post by GoldWingrGreg » Mon Aug 13, 2018 12:56 am

Asphaltmaniac wrote:
Sun Aug 12, 2018 6:34 pm

I just replaced my ADJ at 185K. Mine did not "knock" There was growling noise coming from the vicinity of the alternator. In my case it was loudest just as I stopped for a light/stop sign when fully warmed up. Then decreased as the engine idled.
What year is your Wing ???



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