Timing Belts Smell Like Burning Rubber


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MeneGene1971
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Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Mon Mar 02, 2015 7:41 am



I took my 96 GL1500 in to my local Honda dealer in early November for $1100 worth of work which included new timing belts. I live in Michigan so have been unable to ride it since the work was done. I do however start it up and let it run every few weeks. I have it inside a heated building. Since the day I trailered it home, when I run the engine, I can smell the belts letting off some stink. At first I thought that it might be some residual oil or grease left on the engine, but quickly decided that the smell is rubber- not oil. It isn't billowing smoke out of the engine compartment or anything, but can be smelled without much effort. The engine runs fine, no missing, or other indicators that the timing could be off. It seems to have good throttle response. I told the dealer about it, and they have agreed to take a look at it, which means borrowing a trailer and hauling it in to them- 60 mile round trip- so that is a pain, but I'm not going to ride it and risk damaging my engine until they give their blessing- and warranty. Just wondering if anyone else has ever noticed a rubber smell after installing new belts.


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Keef
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Re: Timing Belts Smell Like Burning Rubber

Postby Keef » Mon Mar 02, 2015 8:25 am

Replaced my belts last year, 97 gl1500. No smell at all, none in the least. Sounds like you may have a bearing
hanging up.

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Re: Timing Belts Smell Like Burning Rubber

Postby WingAdmin » Mon Mar 02, 2015 10:45 am

There should definitely not be a rubber smell - the only place this could be coming from is from a timing belt rubbing on something, which means something's not put together right. You're right to take it back to the dealer.

As for starting the bike every few weeks...please don't. You're doing more harm than good. Read this topic: viewtopic.php?f=19&t=24818

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Re: Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Mon Mar 02, 2015 2:13 pm

Thanks for the feedback. Shame on me- I have actually read your winterizing instructions once before, and I did do most of the stuff listed. Don't know why I feel compelled to start my bike, just wishing I could ride it I guess. I'm going to resist the temptation to do so from now on. I will also take your advice on spraying WD-40 in the exhaust. When I have started it up, I did let it run until it was warm enough to kick the cooling fans on, but I see your point about creating moisture in the exhaust. I'll post a follow up when I get my timing belt issue resolved.
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Re: Timing Belts Smell Like Burning Rubber

Postby ct1500 » Mon Mar 02, 2015 4:25 pm

If it were the belts they are either on or off and will self center on the pulleys, not too much can go wrong with that part. Could be loose or too tight, loose could slap against something or maybe the belt covers and/or the seal are not on correct, but there is not much heat generated and any slapping or wearing of plastic would most likely have worn itself in by now with more of a noise than burning smell.

With a burning smell it would have to be something very hot like the exhaust touching something misrouted. The SE has the foot warmer cables down around there, check yours by turning the knob. You sure the burning smell is not a coolant leak? The oil drain plug if leaking might drip on exhaust a bit. Could even be something left down there like a shop rag, you never know.

What other systems were worked on?
Last edited by ct1500 on Mon Mar 02, 2015 4:47 pm, edited 1 time in total.
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Re: Timing Belts Smell Like Burning Rubber

Postby WingAdmin » Mon Mar 02, 2015 4:43 pm

ct1500 wrote:If it were the belts they are either on or off and will self center on the pulleys, not too much can go wrong with that part. Could be loose or too tight, loose could slap against something or maybe the belt covers are not on correct, but there is not much heat generated and any slapping or wearing of plastic would most likely have worn itself in by now with more of a noise than burning smell.

With a burning smell it would have to be something very hot like the exhaust touching something misrouted. The SE has the foot warmer cables down around there. You sure the burning smell is not a coolant leak? The oil drain plug if leaking might drip on exhaust a bit. Could even be something left down there like a shop rag, you never know.

What other systems were worked on?


A seized or loose (off-center) tensioner pulley would cause constant friction that could definitely cause burning rubber smell.

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Re: Timing Belts Smell Like Burning Rubber

Postby FM-USA » Wed Mar 04, 2015 1:39 am

It's a well known fact that patients find all kinds of surgeons tools left inside them.
Maybe they left you a spare wrench inside the cover?
:lol:
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Re: Timing Belts Smell Like Burning Rubber

Postby mightymousesr » Thu Mar 05, 2015 7:36 am

Sounds to me like a tensioner pulley has a bearing going out. Not much else in there that could be rubbing a belt. Get it checked now if you lose a belt the results for delaying will be catastrophic. Good Luck!
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Re: Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Thu Mar 05, 2015 9:06 am

Other things done to the bike along with the new timing belts: Completely rebuilt forks with new Progressive springs and a fork brace, All fluids changed to include coolant, Repair of a minor coolant leak-I used to be able to smell coolant once I was stopped with the engine idling, not enough to drip or lose much level. I'm positive that I am not smelling coolant or oil. It is definitely the smell of a belt in distress. I work at a natural gas compressor station where I frequently install giant multi-rib belts on various pieces of machinery- air compressors, and gas cooler fans in particular. When I don't get things lined up just right I can cause this same smell- along with rubber bits, smoke, and noise :o I told the service guy at the dealership that they had complete liberty to replace/ fix anything they could find in there while the front end of the bike was torn off. Hard to believe they wouldn't have replaced a questionable tensioner or bearing. Oh well, the beauty of hiring them to do the work and buying Honda belts is that I have a 1 year warranty. They are going to have to donate a bunch of labor now tearing it apart to see what is wrong.
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Re: Timing Belts Smell Like Burning Rubber

Postby FM-USA » Thu Mar 05, 2015 9:13 am

WELL?
Maybe your gerbils have new running shoes and there rubber souls are breaking in?
:roll: . . . .. .. :lol:

ANYways.. ..
If the old idler bearings were used, which is most likely, quite possibly the new higher tension is causing them to not turn. Sounds odd but I've seen it happen on my 77 Toyota and 94 Astrovan, two different bearings and Mfg's.
"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.

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Re: Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Thu Mar 05, 2015 11:11 am

Good theory, as soon as I can borrow an enclosed trailer I will get to the bottom of it.
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Re: Timing Belts Smell Like Burning Rubber

Postby FM-USA » Thu Mar 05, 2015 12:10 pm

MeneGene1971 wrote:Good theory, as soon as I can borrow an enclosed trailer I will get to the bottom of it.

I hope your not to squeamish when you open it up and find a
Gerbil had a shoe blowout and fell into a turning belt.

:o
"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.

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Re: Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Sat Mar 14, 2015 8:02 am

So I finally borrowed a trailer and started up my bike to load it. This time I could SEE smoke, not just smell it, so I drove it on the trailer and shut it down. The Honda shop called yesterday and said the timing belts and all associated pieces/ parts are fine. However they found yet another coolant leak that they have agreed to repair under warranty.( The day I bought the bike- last July or so- I told the service guy that I could smell coolant after my test ride. He thought it was normal because it is a vented system. I made them commit to fixing any coolant issues before I would buy the bike. So far they have replaced 2 hoses, an o-ring, and now whatever this leak is.) In addition to that, the shifter shaft seal is leaking a significant amount of oil onto the exhaust heat shield where it is very quickly being made into smoke. That repair is going to cost around $400. So I was smelling oil and coolant mix which smell remarkably like rubber burning. This is my 7th motorcycle in my life and I have done the wrenching on all of them but this one. I guess I am going to have to make the time to learn how all the plastic comes off. I'll go broke paying shop labor rate. I've learned this lesson with all kinds of machines- cars, trucks, ATVs, snowmobiles, etc. If you don't want to wrench on it- buy new!
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Re: Timing Belts Smell Like Burning Rubber

Postby bstig60 » Sat Mar 14, 2015 10:03 am

Glad you found the problem. You might want to put the shifter brace on your bike while they have it apart to replace the shift seal. It will help prevent the seal from going bad in the future.
As for removing the "tupperware".... After you have done it once, it isn't a problem. Get yourself a factory service manual or a Clymer's service manual, both manuals detail how to remove the plastic.
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Re: Timing Belts Smell Like Burning Rubber

Postby WINGER3 » Sat Mar 14, 2015 6:37 pm

Hi Gene; once you have all the plastic off it's a good time to check all the electical connections and dilectic (probaly spelt wrong but you get the idea) grease all you can reach, check all the vac. hoses you can reach and look for cracks in the bends, it will save you a lot of summer time down time to do it now. :mrgreen:
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Re: Timing Belts Smell Like Burning Rubber

Postby Bluewaterhooker0 » Sat Mar 14, 2015 8:47 pm

+1 on the shifter brace. I put one on last year and it significantly steadied up the shift shaft. Honda probably won't know what you are talking about, as it's not a Honda part. You'd need to order it from outside. But, it's worth the investment. And, if they've got it down to the seal level, now's the time to add it. A GoldwingDocs member invented and sells them, and I believe Cyclemax also sells them.

viewtopic.php?f=14&t=19760

http://cyclemax.com/inc/sdetail/gl1500_ ... /86/200181

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Re: Timing Belts Smell Like Burning Rubber

Postby MikeB » Sun Mar 15, 2015 6:17 pm

MeneGene1971 wrote:...In addition to that, the shifter shaft seal is leaking a significant amount of oil onto the exhaust heat shield where it is very quickly being made into smoke. That repair is going to cost around $400.


Do you mean to say that the replacement of the shift shaft seal is going to cost $400? I hope not. You did say that the antifreeze leak is going to be repaired under warranty right? That shift shaft seal is NOT a $400 repair. That seal can be replaced fairly easily and quickly in your own garage, it just takes a little patience and some hardware removal to get to it. There are how-to articles here to help you with that. http://goldwingdocs.com/forum/viewtopic.php?f=14&t=19833
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Re: Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Mon Mar 16, 2015 6:52 am

Dealer says that the exhaust has to be dropped down on both sides which creates a lot of labor. I don't trust dealers as a general rule, but I don't have time to wrench on anything right now. For now I'll pay in order to have time to play. If they get my bike ready to ride this summer, I'll be content with that.
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Re: Timing Belts Smell Like Burning Rubber

Postby bstig60 » Mon Mar 16, 2015 10:33 am

You might want to take the time to read this....... viewtopic.php?f=14&t=19833
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Re: Timing Belts Smell Like Burning Rubber

Postby MeneGene1971 » Mon Mar 16, 2015 11:43 am

I read it. Thanks. That's good information. I'll tackle it myself if it starts leaking again.
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Re: Timing Belts Smell Like Burning Rubber

Postby WingAdmin » Thu Mar 19, 2015 1:25 pm

MikeB wrote:
MeneGene1971 wrote:...In addition to that, the shifter shaft seal is leaking a significant amount of oil onto the exhaust heat shield where it is very quickly being made into smoke. That repair is going to cost around $400.


Do you mean to say that the replacement of the shift shaft seal is going to cost $400? I hope not. You did say that the antifreeze leak is going to be repaired under warranty right? That shift shaft seal is NOT a $400 repair. That seal can be replaced fairly easily and quickly in your own garage, it just takes a little patience and some hardware removal to get to it. There are how-to articles here to help you with that. http://goldwingdocs.com/forum/viewtopic.php?f=14&t=19833


I was going to say that - if I could make $400 replacing shift shaft seals, I'd be doing five of them a day and retiring young! :)

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Re: Timing Belts Smell Like Burning Rubber

Postby FM-USA » Thu Mar 19, 2015 1:46 pm

I haven't replaced my 1500 Shift-Shaft seal yet.
Is there room for a wider double lipped seal or possible two seals?
"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.

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Re: Timing Belts Smell Like Burning Rubber

Postby WingAdmin » Thu Mar 19, 2015 2:02 pm

FM-USA wrote:I haven't replaced my 1500 Shift-Shaft seal yet.
Is there room for a wider double lipped seal or possible two seals?


Not really, no. But just put the shift shaft stabilizer in, and you won't have to change the seal again. Well, not for a really, really long time. The movement of the shaft end is the primary cause of premature wear and leakage of that seal.

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Re: Timing Belts Smell Like Burning Rubber

Postby MikeB » Thu Mar 19, 2015 2:05 pm

WingAdmin wrote:Not really, no. But just put the shift shaft stabilizer in, and you won't have to change the seal again. Well, not for a really, really long time. The movement of the shaft end is the primary cause of premature wear and leakage of that seal.


My thoughts exactly.
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Re: Timing Belts Smell Like Burning Rubber

Postby FM-USA » Thu Mar 19, 2015 2:10 pm

Yaaaa, I know about the stabilizer... $99.00 is rather HIGH price.
(again) YAAaa, I know it's worth it but that kind of funds I don't have at this time.

I picked up 2 seals just in case I damage the first one going in.
If #1 seal survives my sledge hammer install (kid'n) I'll have the other to sell.


"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.


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