Low rpm squeal - 1500


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Flyboy6
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Location: Toronto Ontario
Motorcycle: 1983GL650i
1983 Aspencade
1997 Valkyrie
1966 Cessna 172

Low rpm squeal - 1500

Post by Flyboy6 » Fri Jul 13, 2018 4:53 pm



This just developed today : squeal from engine front end, at low rpm, disappears about 1200 rpm, and when warmed up. No noticeable impact on operations (had to drive home). Once home checked obvious - belts, tensioner. No apparent wear or damage, inside of belt area clean, tensioners spin freely when slacked off, belt tension good. Sounds more like a metal-metal noise, worried about engine bearings, puzzled that everything settles out just above idle. Pulled engine through by hand on crank bolt, no apparent difficulty or grinding.

Ideas or your experience with this?

I’m away from my main shop and will have difficulty getting parts here, but hesitant to drive it. (At cottage 150 miles from home)


Toronto Ontario
83 Aspencade
83 GL650i
1997 Valkyrie 1500 Tourer
1966 Cessna

DaveO430
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Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: Low rpm squeal - 1500

Post by DaveO430 » Fri Jul 13, 2018 6:42 pm

Vacuum leak? 123456789

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Flyboy6
Posts: 66
Joined: Mon Nov 17, 2014 10:04 am
Location: Toronto Ontario
Motorcycle: 1983GL650i
1983 Aspencade
1997 Valkyrie
1966 Cessna 172

Re: Low rpm squeal - 1500

Post by Flyboy6 » Fri Jul 13, 2018 8:16 pm

No, I know what that sounds like, not the culprit here. I’m wondering about water pump. Best I can trace it, it’s not in the belt area. But definitely a rotating part.
Toronto Ontario
83 Aspencade
83 GL650i
1997 Valkyrie 1500 Tourer
1966 Cessna

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Charlie1Horse
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Motorcycle: 1986 GL1200A Aspencade
1992 GL1500I Interstate

Re: Low rpm squeal - 1500

Post by Charlie1Horse » Fri Jul 13, 2018 9:07 pm

If it does this at idle, get a stethoscope and probe around in there and when you find the right spot you will know it.
Russell

Those who say it cannot be done should try not to interrupt those who are doing it.

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Bluewaterhooker0
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Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: Low rpm squeal - 1500

Post by Bluewaterhooker0 » Fri Jul 13, 2018 10:33 pm

Looks like a Standard Black Schnauzer.
Aaaaawwwww.
Mine is named Lexie
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Erdeniz Umman
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Location: Ankara Turkey
Motorcycle: 2000 GL1500SE

Re: Low rpm squeal - 1500

Post by Erdeniz Umman » Sat Jul 14, 2018 3:24 am

Here is the video record that I had experienced on my bike when new to me.

A video of your problem would help us to comment better.




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Flyboy6
Posts: 66
Joined: Mon Nov 17, 2014 10:04 am
Location: Toronto Ontario
Motorcycle: 1983GL650i
1983 Aspencade
1997 Valkyrie
1966 Cessna 172

Re: Low rpm squeal - 1500

Post by Flyboy6 » Sat Jul 14, 2018 10:05 pm

Thanks - the sound is very similar to your video - how did you resolve it?

Today the sound was absent, two 30 minute rides, not a peep.

I didn’t tinker with anything that made any change.

Btw, dog is Cocker Spaniel Poodle, haven’t yet figured out how to get him on the bike.
Toronto Ontario
83 Aspencade
83 GL650i
1997 Valkyrie 1500 Tourer
1966 Cessna

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Bluewaterhooker0
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Motorcycle: 1997 Goldwing GL 1500 SE

Re: Low rpm squeal - 1500

Post by Bluewaterhooker0 » Sat Jul 14, 2018 11:28 pm

Flyboy6 wrote:
Sat Jul 14, 2018 10:05 pm
Thanks - the sound is very similar to your video - how did you resolve it?

Today the sound was absent, two 30 minute rides, not a peep.

I didn’t tinker with anything that made any change.

Btw, dog is Cocker Spaniel Poodle, haven’t yet figured out how to get him on the bike.
I remember when Erd had that problem. If I recall correctly, it was the timing belt rubbing against the metal shield that is front-most on the crankshaft splined pulley. In the photo, that would be the pulley between the 2 belt tensioners. The round metal plate that is out front, is apparently easily bent, and it was rubbing on the belt as it rotated on the pulley. If you recently did your timing belts, that may explain the new issue. Just check for the belt making contact against that plate when things rotate, and bend it out of the way. If I missed something, I'm sure Erd will correct me.
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Erdeniz Umman
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Re: Low rpm squeal - 1500

Post by Erdeniz Umman » Sun Jul 15, 2018 3:22 am

Correct, the pulley outer piece is very soft to be bent easily. It was bent inward at one point and it was rubbing against the right belt, but only when the engine is hot, and the noise could be heard from every point of the engine with a stethoscope.



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