gs 750 breaking up above 5500 rpm

[750powered]

Hey everyone,

This is my first post I just bought a 1985 gs 750 ef which seems to be some sort of uncommon model as I can't find much on the internet about it so I figured I'd ask here. My problem is I just got the bike running after it was sitting for two years, I drained the old fuel and cleaned out the petcock and after turning over for about 20 seconds it started right up. The motor idles fairly constantly at 1100-1200 rpm but when I give it gas it breaks up and doesn't want to go past about 5500 rpm. Now the bike is missing one muffler which I feel may be contributing to this problem and I also haven't cleaned the carbs yet. I'm basically looking for a list of things to check and common problems that these bikes have that would cause this as its the first bike ive ever owned, thanks for your help.

[BassCliff]

Greetings and Salutations!!

Hi Mr. 750powered,

I've got your list, two of them in fact, in your "mega-welcome". To get you started, let me point you in the right direction, dump a TON if information on you, and share some GS850G 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 Cleanup Series, and the Stator Papers. All of these tasks must be addressed in order to have a safe, reliable machine. 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

[750powered]

Haha thanks for the welcome, I'll get reading! Are there any good Canadian websites for GS parts? I hate shipping

[Smokinapankake]

Follow the advice here and you'll have it running like new again. Congrats on your bike, they are one of my favorite GS models!

[BassCliff]

Hi,

Are there any good Canadian websites for GS parts? I hate shipping

That's a good question. I don't know of any. If a few of our friends from the North will recommend a few, I'll add them to the "mega-welcome" vendor list.


Thank you for your indulgence,

BassCliff

[chef1366]

You'll need to dissasmble the carbs, clean them and install new o-rings.