Timing belt noise


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smack67
Posts: 29
Joined: Sun Aug 12, 2012 5:41 pm
Location: Racine, Wisconsin
Motorcycle: 1998 Honda Goldwing Aspencade

Timing belt noise

Post by smack67 » Sun Feb 12, 2017 5:17 pm





Hey guys I know it has been a while since I posted, but I have a problem that is driving me nuts. I replaced my belts and tensioners 2 years and 23000 miles ago but it never sounded right afterwards. So I have taken the covers off a few times since. I am determined to find the problem, the belts especially the left one flop and click until the engine warms up, then it gets relatively quiet and smooth, I pulled the plugs and crank it by hand and the belt is squeaky in certain places, there is also a brown stickyish residue over everything. The tension seems to be correct. I used the napa belts are they a bit wider perhaps?



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smack67
Posts: 29
Joined: Sun Aug 12, 2012 5:41 pm
Location: Racine, Wisconsin
Motorcycle: 1998 Honda Goldwing Aspencade

Re: Timing belt noise

Post by smack67 » Sun Feb 12, 2017 5:48 pm



I may not be the brightest bulb but what if one put on a belt say for a gl1200 #250070 might that belt be a bit wider or longer?

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Bluewaterhooker0
Posts: 984
Joined: Wed Nov 14, 2012 11:27 pm
Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: Timing belt noise

Post by Bluewaterhooker0 » Sun Feb 12, 2017 10:09 pm

It's not that NAPA belts are wider. You've got the wrong belt on there. Look at these 2 NAPA pages, specifically the specs on the belts. You're using a 250070, and the correct belt is a 250275. They're the same length, tooth count, and pitch, but the width is 2mm wider, and shape of the actual teeth is wrong. With something that critical, I'd get those things off before riding any further, and install the correct belts. Either NAPA 250275, or GATES T275.
Could it be, the wrong belt was about half the price of the correct belt, that motivated the purchase ?
I got the Gates from Amazon for about $17 each, primarily because no NAPA around my area had the NAPA version in stock, and the cost was double.

https://www.napaonline.com/en/p/NBG250275

https://www.napaonline.com/en/p/NBG250070

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smack67
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Location: Racine, Wisconsin
Motorcycle: 1998 Honda Goldwing Aspencade

Re: Timing belt noise

Post by smack67 » Mon Feb 13, 2017 7:25 am

Thanks that is what I thought, when I purchased the belts I am sure I asked for the 250075, but never verified before installation. From now on I will be careful to check the part number on the actual part. You have no idea how many times I pulled those covers off at various locations, campgrounds, rallys, weddings etc, trying to figure out the noise. My beautiful wife thinks I am crazy, and I like taking things apart for fun.

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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Timing belt noise

Post by dingdong » Mon Feb 13, 2017 8:52 am

Probably just a typo but don't get confused. The correct number is 275 not 075. Just making sure.
Tom

John F. Kennedy would be impeached by todays liberal Democratic socialist party.

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Erdeniz Umman
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Joined: Tue Oct 27, 2015 12:33 am
Location: Ankara Turkey
Motorcycle: 2000 GL1500SE

Re: Timing belt noise

Post by Erdeniz Umman » Wed Feb 15, 2017 3:33 pm

If it is something like this, I have found out the problem, and solved.




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Bluewaterhooker0
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Joined: Wed Nov 14, 2012 11:27 pm
Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: Timing belt noise

Post by Bluewaterhooker0 » Wed Feb 15, 2017 7:29 pm

Erdeniz Umman wrote:If it is something like this, I have found out the problem, and solved.



OK......So ? The solution, and problem ?

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spiralout
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Location: Alabama
Motorcycle: 1975 GL1000 (gone)
1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: Timing belt noise

Post by spiralout » Wed Feb 15, 2017 7:38 pm

Bluewaterhooker0 wrote:
OK......So ? The solution, and problem ?

Hi everyone,

I want to share my experience about a strange noise coming from the engine, after reading some threads about unsolved engine noises.

Two months ago, I noticed that the noise in the video below was starting when the engine was hot at fan-on temperature and at idle.

At first, I thought it was coming from the timing belts. In order to make sure I used mechanics' stethoscope, but it could be heard from every location of the engine (timing belt covers, head covers, alternator, water pump etc.).

So I decided and replaced alternator dampers, but it didn't help. Then, I checked the timing belts and saw that they were fine in shape, however adjusted the tensions of them. The noise disappeared for some time and started again. So I decided that the noise was because of the belts.

I ordered new belts and replaced them, waited for the engine heated up. I was happy thinking the noise was gone but it started again with a different noise like rubber screaming this time. While trying to locate the source of the noise, I saw that the crank shaft pulley outer part was bent and making contact with the right belt at every rotation.

I found out that this part was so soft and could be bent easily when removing or installing the left long timing belt cover.

I straightened the pulley easily, and checked it when rotating. The noise has gone this time. I hope this helps some others too.

buzzardchess
Posts: 5
Joined: Tue Feb 02, 2016 1:02 pm
Location: pittsburgh
Motorcycle: 96 gl1500SE

Re: Timing belt noise

Post by buzzardchess » Thu Aug 02, 2018 3:23 pm

Hi All,

I wanted to share that my gl1500 was making a tapping or knocking noise that sounded very much like the video posted above. Using the screwdriver for a stethoscope method, I thought sure I could hear it deep in the engine. With 215k on the clock, I was fearing I may need to start searching for a replacement motor when I stumbled on this post. After reading here, I pulled the timing belt covers and sure enough, one belt had just enough slack to slap off the cover and make the noise. I tensioned to spec and all was well. (Belts looked fine and have 40k on them, so I'll wait a year or two to change)

I hope this info might help another with diagnosing.

Thank you to everyone for all the help and information that is available on this forum. Has helped me on many a project.



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