Tapping noise


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Tapping noise

Postby ohiobiker » Fri Feb 18, 2011 8:47 am



I just bought a 1984 Goldwing GL1200 Interstate last week. Finally here in Ohio, I got it out to test it on the road. It idles good, but when I start out in 1 st and 2nd gear it has a rattle and tapping noise. It goes away when I speed up. Could this mean I need it tuned up, for example timing or valve tapping?


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Re: Tapping noise

Postby virgilmobile » Fri Feb 18, 2011 9:17 am

My 1000 and 1100 would rattle when accelerating just off idle.I synced the carbs very carefully to smooth out the off idle throttle response.The tapping noise could be the hydraulic lifters sticky.I'd try a oil change with MMO or Sea Foam before tearing into it.Unless you know the history of the bike,a "tune up" is always a good idea.Plugs,carb cleaning,timing belts,oil change,etc.
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Re: Tapping noise

Postby ohiobiker » Fri Feb 18, 2011 9:24 am

Thanks. I was going to change the oil soon and see what happens. If it was a car it would sound like lifters, so that the best way to describe the noise. But the noise goes away after speeding up.
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Re: Tapping noise

Postby virgilmobile » Fri Feb 18, 2011 10:45 am

I just got a 1200 before Christmas,I'm going thru it all before I ride.I'm replacing all the brake fluid and cleaning the calipers.Cleaned the carbs,replaced the filters and oil(castrol 20-50)And 1/2 quart of MMO.Fixed the alternator plug(This is a problem area).Just the general maintenance stuff that I know was never done.
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Re: Tapping noise

Postby ohiobiker » Fri Feb 18, 2011 11:17 am

Looks like I am going to do the same thing mysefl, not knowing what the previous owner has done. I love the Goldwing, and looking forward to a safe ride this Spring.
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Re: Tapping noise

Postby imfree » Fri Feb 18, 2011 11:41 am

Put the mmo in drive it 20-30 miles,Keeping the RPMs below 4000 then change your oil,I would put some mmo in the gas as well,This will help clean your valves and carbs. Joe
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Re: Tapping noise

Postby portugeezer » Fri Feb 18, 2011 11:56 am

I spent several years working in auto salvage. The EPA is strict and laws are heavily enforced in the Chicago area. All fluids had to be drained upon a vehicles arrival. Some engines would sit in our stock for a year or more with no oil in them. They would be installed and most often a lifter would be ticking. We recommended adding MMO then changing the oil and adding it again to the fresh oil. This almost always seemed to do the trick. I don't know what's in MMO but it is really something!
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Re: Tapping noise

Postby WingAdmin » Fri Feb 18, 2011 1:26 pm

Most likely this will solve almost all of your problem: How to synchronize your carburetors
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Re: Tapping noise

Postby ohiobiker » Fri Feb 18, 2011 1:31 pm

My Goldwing is a 1984 GL1200 Interstate it has fuel injection.
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Re: Tapping noise

Postby WingAdmin » Fri Feb 18, 2011 1:34 pm

Oh, well then - syncing the carbs is not going to do it, is it? :)

I've not looked at a fuel-injected 1200 before - there must be some mechanism with which the cylinders are balanced against one another? That's basically what you're looking to do, to make sure all cylinders are putting out the same power during a power stroke, so as to even out the pulses on the hyvo chain, which is what you hear rattling.
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Re: Tapping noise

Postby ohiobiker » Fri Feb 18, 2011 1:40 pm

I am going to change the fluids and then get it in a shop for a tuneup I guess.
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Re: Tapping noise

Postby imfree » Fri Feb 18, 2011 2:09 pm

The amount you are going to pay the shop you could fly me up to ohio and back put me in a hotel for a couple days while I fix your bike,Hell man DIY. all the info you need is wright here,You have a great bunch of guys here to help with anything except turning the wrenchs,These critters just look complicated.It just takes a little time to do,But look at what you will learn.The more you know about what makes this bike tick the more confident and safer rider you will be.Joe
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Re: Tapping noise

Postby portugeezer » Fri Feb 18, 2011 7:25 pm

I have to agree so far everything I needed to know was right here with the guys on this forum if you can turn a wrench you should be ok!
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Re: Tapping noise

Postby raycw » Sun Feb 20, 2011 2:05 pm

Lets start with some corrections:

There were only 2 GL1200's that were fuel injected from the factory. The 85 GL1200LTD and the 86 GL1200 SEi. All other GL1200's used carbs. If you have an 84 Interstate then it has carbs.

Your bike uses HVA (Hydraulic Valve Adjusters) and do not require valve adjustments like the earlier 1000's and 1100's do.

MMO is diesel based and works good to thin out and clean any oil debris that might be in the HVA's. That is probably where your ticking is coming from… bikes that have set for a prolonged period are especially prone to HVA's sticking.
You might need to drive longer than 50 miles before it cleans itself out though. I'd give it at least 100 miles and maybe more.

It'd be a good idea to adjust the carb sync but severely out of sync carbs usually cause a 'knock' type sound that is sometimes mistaken for a crank bearing knock.
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Re: Tapping noise

Postby ohiobiker » Sun Feb 20, 2011 8:18 pm

Ok I am convinced to use MMO to start to clean out my system. Now the question is what is MMO and where do I get it? And how much do I use and where do I put it? Thanks.
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Re: Tapping noise

Postby HALBUDD » Sun Feb 20, 2011 8:34 pm

ohiobiker: If you cant find MMO go to walmart get a can of SEA FOAM then put it in your oil, take your bike for a ride keep it at normal speeds ride for about 40 or 50 miles come back and change your oil and filter. You should see very dark oil it will dissolve all the gunk in your engine. good luck Hal P.S you can put the SEAFOAM in your gas to help clean your tank fuel lines and carbs. This stuff is great
A woman that can use tools is worth her weight in gold !!
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Re: Tapping noise

Postby virgilmobile » Sun Feb 20, 2011 10:15 pm

MMO is Marvel Mystery Oil.I get it at Wal Mart.Large red bottle.I use 1/2 a quart directly in the engine and 1/2 of what's left in a full tank of gas.Drive 25-35 miles.Drain the oil and replace the filter.I prefer Castrol 10w-40.I do add the last of the MMO(about a pint)with the new oil.Just my preference tho.
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Re: Tapping noise

Postby Jdept » Wed Mar 02, 2011 9:08 am

I have a '82 GL1100I and I've read in forums that a similar problem with noise occurs at low RPM could be the primary chain which has a little stretch therefore is slapping the case. I believe that's the reason why my clunking noise is happening? At least this sounds little less of a problem than a slipped bearing. My sound goes away as soon as I get about 2k RPM.

:geek:
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Re: Tapping noise

Postby ohiobiker » Wed Mar 02, 2011 9:13 am

It sounds like the same noise. It only does it when I start off in 1st and 2nd. After I speed up it doesnt make that noise. Does that mean I need a new chain or just a adjustment?
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Re: Tapping noise

Postby Jdept » Wed Mar 02, 2011 12:20 pm

I believe there's no adjustment, just replacement. I haven't looked into as whether it's a simple procedure, I just foreseeing to being a expensive job. But I'm probably being skeptical. I paid $900 for my GL and I am doing very little restoration at a time. I will go about to doing this, I believe someone told that I could ride it for a long while without having to worry.

~J
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Re: Tapping noise

Postby ohiobiker » Wed Mar 02, 2011 1:42 pm

Just sounds like crap lol
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Re: Tapping noise

Postby Jdept » Wed Mar 02, 2011 3:23 pm

I know, it freaks me out. But I don't keep it low in RPMs hardly at all and especially when clutch is being engaged. It really like ~3k RPM anyways.
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Re: Tapping noise

Postby WingAdmin » Thu Mar 03, 2011 6:28 pm

Jdept wrote:I have a '82 GL1100I and I've read in forums that a similar problem with noise occurs at low RPM could be the primary chain which has a little stretch therefore is slapping the case. I believe that's the reason why my clunking noise is happening? At least this sounds little less of a problem than a slipped bearing. My sound goes away as soon as I get about 2k RPM.

:geek:


That's usually precisely what it is - that primary chain slap. I've never heard of them stretching or getting loose, but what DOES usually cause that noise is uneven power pulses coming from the cylinders. Basically, meaning the cylinders are not generating the same amount of power, which sets up a vibration in the chain, which makes that noise.

Normally this can be fixed by re-syncronizing the carbs, which balances the cylinders' power output, and smooths out the pulses. However in a fuel-injected bike, there are no carbs.

You might want to check the compression of your cylinders and see if one or more cylinders is down on compression, which could explain the uneven pulses causing the chain noise.
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Re: Tapping noise

Postby Jdept » Mon Mar 07, 2011 10:48 am

I borrowed a friends IR Thermometer and one cylinder seemed to read a good 50 degrees less than the others and the others were apart maybe 10~40 degrees. I do plan on syncing it. I want to go through all of it. Check timing, advance, valves, and then sync. Just haven't done it yet.

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Re: Tapping noise

Postby Dansweeney » Sat Mar 12, 2011 1:08 pm

Good afternoon all. Ive just literally activated my membership, after buying an 87 Aspencade this morning! I had a naked 1100 about eight years ago and boy did I regret selling that one! It didn't look pretty - we use a lot of salt on our roads in winter over here in Northern Ireland, but she was running fine until last year. The plank that owner her took the engine bars off because they were a bit rusty and spoilt the look of the bike. He then put her down the road on the port side and traumatic amputation of the left cylinder head, sure didn't do much to improve her looks.
Anyhow, back to the point.
This may seem silly, but have you checked the alternator centre bolt to see if it is tight? My 1100 used to make a bloody awful noise that I thought was terminal, until a long term wing owner pointed me in the right direction. It may be worth a shot to pop the little inspection cover on the casing off and give it a tweak.
Have fun!
Cheers Dan


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