Your motorcycle might idle fine and bog out when in gear because of a problem with the carburetor or the bowl. If either area is dirty, it will often bog the bike when in gear.
Maybe a clogged fuel filter or bad injectors.
bog down in first gear and then it strtes to shift
what would cause my car to run fine when it has first started up then after a while first gear will kinda bog down.
Auto Zone will read your computer codes for FREE.. Have your codes read and go from there.
Does it always bog? Maybe you overfilled the case with oil. Have you tried a new spark plug? maybe your in the wrong gear. -need more info on what it does/when it does bog-
If it's in the right gear, it sounds like a timing problem.
Try setting the timing a little higher to get rid of the bog.
check clutch slave cylinder
The most common reason is that your air/fuel mixture is inefficient or dirty. If your air filter is clogged or has a lot of dirt. It could be bogging down the engine. Consider cleaning the air filter or replacing it with an air kit to see if the problem is resolved.
sounds like you need a new accelarator pump in your carburettor
The transmission will shift to the appropriate gear, if it's functioning properly. Otherwise, you'll either run really high RPMs, or you'll bog down.
It could be your IAC, Idle Air Control. The IAC can be affected by temperatures. A test to see if this is your problem, start your engine and allow it to stall. Open your hood and VERY LIGHTLY tap your IAC with a hammer or screwdriver. Try starting it again. If it runs fine, your IAC is sticking. If not, take it in and get it looked at.