My bike seems to bog im not sure if its the gas or a stretched throttle cable but it sat for awhile and i took it into getting everthing fixed it runs great just feels sluggish threw my throttle

There could be several possible causes for your 2002 Hyosung GV250 bogging down when starting out. Here are a few things to check:

1. Fuel system: Ensure that the fuel system is functioning properly. Check for clogged fuel lines, dirty fuel filter, or inadequate fuel supply.
2. Carburetor: The carburetor may be dirty or clogged, causing a lean fuel mixture. Clean the carburetor or have it professionally cleaned if needed.
3. Air filter: A dirty or clogged air filter can restrict airflow to the engine, leading to poor performance. Check and clean or replace the air filter as necessary.
4. Spark plugs: Worn or fouled spark plugs can cause poor ignition, resulting in engine bogging. Check and replace the spark plugs if necessary.
5. Exhaust system: A partially blocked or restrictive exhaust system can cause poor performance. Check for any obstructions and clear them if necessary.
6. Electrical system: Ensure that the battery and charging system are functioning properly. Weak battery or faulty charging system can lead to inconsistent power delivery.

If these steps do not resolve the issue, it may be necessary to have a professional mechanic inspect the motorcycle to diagnose the exact cause of the problem.

Have you cleaned the carb power jets and blown them and there passages out with compressed air?.

Is it bogging down, or just stops revving at the point...first check the throttle cable, twist it wide open and make sure it's opening all the way...after awhile they tend to stretch and that won't allow you full power....i hope this helps.

Before adjusting the carb, has the bike been setting for a long period of time? Has anything been done to the bike that would change carb settings? If it's been setting, there is probably a gum build-up in the jets and fuel passages. If it sat all winter, my solution is to add 1/2 can of SeaFoam to the gas, lock down the front brake and rock the bike back and forth mixing the fuel and additive well. Start the bike and run at a high idle until engine temp is normal. Shut it down and let set for an hour or two, allowing the mixture to work in the carbs. Restart and run at high idle again. If it seems to clear up somewhat, ride the bike several miles to check if it worked.

jets need ajusting but seem ok without a load

first of all i would change the spark plug, then change fuel and makle sure ,carb is letting in fuel make sure , float is not stuck

This sounds like water condensation. Drain the carbs and a cup of gas from the tank and see if that solves the problem. If no joy, check the filter screen (inside the gas tank) mounted on the gas valve. A plugged screen may not let the gas flow freely to keep up at higher speeds. If still no joy, clean the carbs.

First when you say it bogs, does the motor stutter or does it just go flat? A very good test to determine if the problem is to much fuel or a lean situation is while riding get in top gear with a load on the motor at full throttle. Slowly roll out of the throttle about 1/8th throttle and see if the motor picks up RPM's. I'm suspicious that you may possibly have a plugged air filter or perhaps something blocking the air inlet. Does the bike get worse fuel mileage? Have you checked the valve clearance lately? Tight valves are notorious for the problem you are having. Please contact me with test results and I can further diagnose your problem. I'm confident we can resolve your problem as soon as we determine which direction we need to go.

That's interesting, I have run throttle cables for many years with minimal stretching. Are you tightening the lock nut at the adjustment? And are you sure you have the cables adjusted properly? Specifically the return cable, if it is too tight it will conflict with the primary cable, this will cause the primary cable to (over time) pull on and eventually stretch the return cable. Try loosening the return cable, then with the throttle wide open ,tighten the return until it has just "a hair" of free play. Then adjust the throttle to where it has just a very small amount of free play ,then tighten the lock nuts. Then check to be sure the return cable has some play when the throttle is closed and if necessary re-adjust.

got my side stand switch fixed and took her out for a spin and had yet another problem. When im riding it and take off it kinda sputters unless i crack it all the way open and then it runs out great. It seems that the problem is is just like at half throttle taking offit just sputters. A ny suggestins? The bike had sat for about six months before i got it. also VR 2000 Enduro Your carbs are clogged somewhere because the gas sat so long -- it turns to varnish over time and it likely has clogged your low-speed jets. (When you crack it open it's on the main jet and gets enough fuel.) You should get a product called SeaFoam, which can help clear carbs. If that doesn't work, you'll need to take the carbs apart and clean out the little passages. ,,,