Engine noise?


Information and questions on GL1500 Goldwings (1988-2000)
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Jeffy1500
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Joined: Mon Jun 20, 2011 8:55 pm
Location: Fresno,CA.
Motorcycle: !988 Honda Goldwing Standard

Engine noise?

Postby Jeffy1500 » Tue Jun 21, 2011 7:57 pm



I just bought an 88 GW 1500 I bought it after being told of a knock after the engine was totally warmed up. I rode the pants off of it before buying it ,No noise, no knock. Rode it for a 40 min freeway drive back to Fresno at 80 mph. After riding around town I'm finally hearing what noise had been described to me. It's kind of a come and go knock and rattle . It really doesn't sound like it's crank related, more like cam and valve. Only 20,000 miles on speedo. The next day while running it again, no noise till very warm then it's back. Any thoughts? Thanks Jeff :|



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trike lady
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Motorcycle: 1993 GL1500 Aspencade with Voyager (Sold)
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Re: Engine noise?

Postby trike lady » Tue Jun 21, 2011 8:25 pm

You could have a bad hydraulic tappet.
What gear are you running the bike in around town?
Mine will make a rattling sound if its in too high a gear with low rpms.
When were the timing belts changed last?
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Jeffy1500
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Location: Fresno,CA.
Motorcycle: !988 Honda Goldwing Standard

Re: Engine noise?

Postby Jeffy1500 » Tue Jun 21, 2011 9:09 pm

I was told that the belts were recently changed as was the alternator. With only 20,000 on the dash the BS flag is waving but I'm a gambler! After riding it I am hoping it's not too bad but I got a good deal on her and am ready to bite the bullet! ha! The general appearance of the bike looks to be a low mileage bike that seems to have been pampered. After the noise starts I have to keep her under 3000 rpm or the rattling increases? Thanks for your reply Trike Lady! :)

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child_of_fire
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Location: Stony Brook, New York
Motorcycle: 1993 GL1500

Re: Engine noise?

Postby child_of_fire » Tue Jun 21, 2011 11:41 pm

i have a similar issue. it almost sounds like you are in too high a gear with low rpm. very noisy and kind of weird. bike has 93k miles on it and doesnt seem to be hurting anything.. id be curious to know what it is as well.

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Jeffy1500
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Location: Fresno,CA.
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Re: Engine noise?

Postby Jeffy1500 » Wed Jun 22, 2011 9:40 pm

Have any cam issues come up, about bearings or crank bearings been spun? I was wondering if a belt had broken and some damage developed and that is the root of my problem otherwize why would they be doing an alternator and belts replacement at 20,000 miles. I know, it's an 88 and these basic maintence practices shound be used at this time but I fear a failure caused this work to need to be done.

mrmikey
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Location: Hardwood Lands, 30 mins outside Halifax, Nova Scotia, Canada
Motorcycle: 1996 GL1500 Aspencade

Re: Engine noise?

Postby mrmikey » Thu Jun 23, 2011 3:30 am

Any chance it could be spark knock, pre ignition? Fits the criteria, knock and rattle, around town could be lugging it a bit. I know on my previous ride if I didn't keep the rev up and lugged it the least little bit it would sound like a bag of marbles......Mike
1996 Aspencade

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dingdong
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Re: Engine noise?

Postby dingdong » Thu Jun 23, 2011 9:12 am

Not sure about the actual cause of the knock but if a belt had broken there would be more damage than a slight knock. The pistons will hit against the valves and bend the stems and or crack the piston so I doubt you have that problem. Belts should be changed more often because of age rather than mileage and the alts on the 1500s are known for going out early.
The noise you are hearing, is it a deep toned knock or a higher pitched tap?
Tom

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Jeffy1500
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Location: Fresno,CA.
Motorcycle: !988 Honda Goldwing Standard

Re: Engine noise?

Postby Jeffy1500 » Thu Jun 23, 2011 12:18 pm

It's more a knock than a tap. What noise would the alternator make if it was the problem? Thanks,Jeff

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dingdong
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Re: Engine noise?

Postby dingdong » Fri Jun 24, 2011 9:01 am

I have personally never heard the noise from the alt. but there are rubber dampers behind it that get hard and shrink and don't do their job. If whoever replaced it didn't replace the dampers that could very well be your problem.
Tom

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giturgun
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Re: Engine noise?

Postby giturgun » Sat Jun 25, 2011 5:12 am

Having to keep it under 3000 rpm. After the noise starts does it come and go?? If so and it is louder with no load . It may possibly be a wrist pin bushing . I had one go bad on a CBX a customer had. Noise would coe and go . Had a strange double rap when it made the sound.and seemed like it was louder with no load.
Get a stethascope and try listening at the top of the heads and around the other engine areas . Narrowing the area down helps considerably.
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Jeffy1500
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Re: Engine noise?

Postby Jeffy1500 » Tue Jun 28, 2011 1:13 am

You may be on to something here Gityergun! Hope not ,but that kind of describes the sound in a way. I agree with the stethoscope.I'll let you know what comes out of this soon I hope! Thanks,Jeff




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