Motorcycle Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
So I picked up this old 1981 Suzuki GS850GL.
The bike runs great. Has just had all the fluids changed, except for the gasoline (I believe).

The bike starts, idles, shifts and accelerates perfect. As I'm cruising, and let off the throttle as I head to a stop, I start to hear a bunch of little pops. Not loud like a backfire, but definitely noticable.

I plan to change the gas today and maybe add an ounce of seafoam.

Anything I can look at for this popping? I read somewhere where it's normal?

Thanks!!
 

·
American Legion Rider
Joined
·
21,140 Posts
May just be a loose connection at the header or muffler allowing air in.
 
  • Like
Reactions: Jedidarvy

·
Registered
Joined
·
737 Posts
My GS 1000 has been doing that for the last 3 or 4 years. Never had an issue with it. I believe it has to do with cam 'overlap'. Probably the wrong word, but there is still unburned gas in the combustion chamber and is expelled thru the exhaust lobe. The heat of the exhaust will combust the unburned gas, causing it to backfire or 'pop' as you say. I'm sure somebody can explain it better than I can though.
 
1 - 3 of 3 Posts
Top