gs1000

[tama777]

I have a 1980 gs1000l and when i first start the bike until its up
to temp it has a lower surging knocking sound that goes away
when warm. should i start crying now or is this normal?

[cowboyup3371]

Howdy. Welcome to the site. Can you tell us the history of the bike as in what maintenance has already been done, are you the original owner or do you know what any PO has done, etc? Throw your location in your profile and maybe if someone is close by they can possibly lend you a hand.

Otherwise, Basscliff will be along later with the official welcome.

[BassCliff]

Greetings and Salutations!!

Hi Mr. tama777,

Try to isolate the sound. It could be "cam float" (from the top of the motor), "clutch rattle" (from the right side of the crankcase, as you're sitting on it), or it could be normal noise that goes away once the oil is fully circulated. We need more information.

But for now, let me dump a TON of information on you and share some GS lovin'.

I just stopped by to welcome you to the forum in my own, special way.

If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Rebuild Series, and the Stator Papers. Now let me roll out the welcome mat for you...



Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

Thanks for joining us. Keep us informed.

Thank you for your indulgence,

BassCliff

EDIT: 7 minutes! (It's a slow day at work.)

[cowboyup3371]

Oops, sorry Cliff, didn't realize you were already on.

[BassCliff]

Oops, sorry Cliff, didn't realize you were already on.

Not to worry! We can all share the love!


Thank you for your indulgence,

BassCliff

[tama777]

I know that it was owned by an older guy that took very good care of her.
I have had it for about 6 monthes and i bought her from mo brother in law.
it has about 35000 miles on it and pulls like i monster. But i dont remember
the noise when i first road it. I dont know if my mind is playing tricks on me
or what.. But the sound does quiet down.

[tama777]

the sound seems to be coming from the lower right side and again it is
a surging knock

[tama777]

Gona go for a ride. its 42 outside....freakin heat wave. Hope to hear from
all of you and thank you for any info.......

[850 Combat]

the sound seems to be coming from the lower right side and again it is
a surging knock

A surging knock from the area of the clutch.

How does it sound if you pull the oil fill cap off?

[Big T]

Does the sound go away when you squeeze the clutch lever?

[Steve]

How does it sound if you pull the oil fill cap off?

BE CAREFUL TAKING THAT CAP OFF while the engine is running.

Not sure about the 1000L, but it shouldn't be that much different than my 850s.

You take the cap off, there will be flying oil coming out of there.

.

[tama777]

knocking

It does not stop with clutch action. just woundering if a little
thicker oil would make a difference. But dont want to geuss.
I read somewhere that there are just a noisy motor. I use 10 40

[tama777]

Im 99% sure its not valves

[tkent02]

Sometimes the big clutch hub nut comes loose and it makes a noise like that.
It's easy to fix.

[Nessism]

The clutch hub noise won't go away when warm so that may not be it, although it's a very common noise.

In general you need to do maintenance on old bikes. Have you adjusted the valves and synced the carbs?