Bike Bogs

[Guest]

Hello, Recently purchased a 1982 GS450T and have been lurking the forums for a while. Finally have a questions, probably should introduce myself, but Ill do that later.

Anyway, I got the bike with no knowledge of its past maintenance so I tuned it up, spark plugs, oil, filter, all fine. Then I got the air filter today so I replaced it. When I removed the old one I was lucky enough to find that there was a t-shirt rag over the old air filter (very dirty), so I removed it, replaced the air filter and went on. Now the bike sounds like it breathes much better however the engine seems to bog down when I hit around 5k rpm?

What could be causing this? The increased airflow of a clean filter and no t-shirt?

[cowboyup3371]

Welcome. Remember this is not a brand new bike so there's a lot you will have to do to get it running correctly. You'll get the official top ten things to do from Basscliff later but I can say you will want to clean those carburetors thoroughly by fully disassembling them, dipping each carb body and the jets in a can of Berryman's for at least 24 hours, replacing the orings in each carb with a set from www.cycleorings.com (guy is a member here), and then reassembling.

Make sure you also replace the intake boot orings and do a valve adjustment while you are in there. All of the how-to's can be found on his site.

Finally, to help you later more later on, throw your location in your profile and your bike info in your signature so we don't keep asking and you don't have to keep remembering.

[BassCliff]

Greetings and Salutations!!

Hi Mr. jeffasaurus2,

Everything starts with clean carbs, sealed air intake system, adjusted valves, and a healthy charging system. If you don't know the history of the bike then all of the maintenance should be done up front. My first thought is fuel starvation. Is there an inline fuel filter? Are the carbs all stock as far as jetting? Did you put a light mist of oil on the new air filter?

Anyway, let me dump a TON if 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. 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

[jeffasaurus2]

Thank you all for the welcome!

I guess I lied a little, I do know the carbs had been rebuilt this last winter and the intake o-ring boots look just fine. I honestly think something broke loose into the Fuel line/filter somewhere, I just found it odd that it occurred simultaneously with the air filter replacement.

Once the school semesters over Ill have plenty of time to work this out!

[cowboyup3371]

Jeff,
I'm only about two hours south of you East of Colorado Springs so if you want some help drop a line. Plus, Tkent02 is in Littleton, GhostGS is up north of you, and there are a couple of others close by.

[jeffasaurus2]

Awesome! Its good to know so many others are close by!

Thanks for the offer, I'll definitely let you know!

[Gssheller]

I had a very similar problem with my 1kg when I first got it. No power between 3000 and 4500 rpm. It would get through it, but it was very bogged down.

Went to Napa, purchased some weatherstripping and resealed the entire airbox and also the gasket on the air-filter and she runs like a top now. The amount of power is amazing. I suspect if the dirty rag were decreasing airflow in lieu of a properly sealed airbox, this could be your problem.

Be sure to follow the rest of the HOWDY. There is more information in there than can be digested in a month of Sundays.

Hope that helps,
Brian

[jeffasaurus2]

Thanks for the suggestion. Resealed the lid of the airbox (Mine has the flat air filter rather than the cyllinder), and gave it a try. Nothing better...

Honestly I'm gonna go through the 10 things list and replace everything, rebuild carbs, etc. I don't really trust the guy I bought it from after finding a t-shirt in the air intake, among other things.

[jeffasaurus2]

I got a good 100 miles out of it before it started bogging down though!