Damn bike.

[Guest]

Okay so I got my bike running and I went for a test drive and I was riding around the block and I noticed when I puttwist the throttle it like revs down and when I try driving with it it like the exhaust sounds like it's thudding and it's not going any faster than 10 mph

[nejeff]

A lot more information is needed here to speculate

[Redbeard]

Like what?

[azr]

Is this post intended to alleviate some frustration and just a rant? or is it actually a post looking for help with why your bike isn't running properly?

[Redbeard]

1981 gs1000 35k miles.

[Redbeard]

Need help to Get it running/ rant lol

[bonanzadave]

"Trying to diagnose running problems on a bike with an unknown maintenance history is an exercise in futility until a baseline is established through proper maintenance. Things like clean carbs, properly adjusted valves, sealed intake system (airbox, carb boots), a clean gas tank (no rust), and a properly functioning petcock are 100% mandatory for the bike to run properly. It's best to perform all the bikes maintenance when you first get the bike, and then if problems show up you will know what the problem is not."

Mr. Nessism

http://www.thegsresources.com/_forum...d.php?t=171846

A poor running Bike sux ! But you've come to the right place for help and the guys here have BTDT many times over. So....I suggest start with this link (above) and then move on to this one.

http://members.dslextreme.com/users/bikecliff/

[tkent02]

Not touching this one.....

[Nessism]

Wow!

Dave set up with the info. Go through the links and do some maintenance and then report back.

[Redbeard]

The carbs are clean the tank is clean and the petcock is properly working. It seems like there is a dead zone in the throttle when I twist it about a quarter of the way. And when I put it at full throttle it sounds like thudding but not getting any louder just constant thudding from the exhaust

[Frank Z.]

A lot more information is needed here to speculate

Is your bike completely stock, or does it sport any mods (pod filters, carb kit, 4/1 exhaust, etc.)? Have you rebuilt carbs, ensuring all parts are in good shape, accounted for, and reassembled properly? Carbs vacuum synced? How about inlet manifold o-rings... leaky ones will upset any performance you're trying to achieve.

As nejeff mentioned, you need to offer up as many details as you can think of. Post a couple pics of your bike as it sits now.

[Carter Turk]

Exhaust manifold gaskets, maybe or broken/loose exhaust studs.