violent jerk during acceleration...

[Justin06stone]

hello everyone.. i have a few questions on a go kart i recently purchased, and this looked like a good place. its a 2010 american sports work carbide 150cc go kart. i bought it used. everything has been fine until the belt broke, i bought a new one and during installation i found out the rollers were completely destroyed. i replaced them with 10 gram sliders, and i have no idea what stock ones were. since that it ran great.... for a few hours. it now(very violently btw) jerks pretty rough when i accelerate, and if i manage to get past 10 mph without stalling from it jerking it runs fine but that doesn't happen to often. any help would be greatly appreciated. thanks!

 

[landuse]

It probably runs fine after 10 because the tc is then totally engaged. I would take it apart and clean

 

[DirtyDamage]

Kartfab has a good video on it. Look for the video at his youtube

Youtube.com/kartfab

 

[Justin06stone]

I took all the components of the torque converter off and they went into the parts cleaner, I let them fully dry( the clutch didn't look worn at all) an reassembled it... And it still does it?!? The belt send to be the right size and is in new condition. I can barley ride it oh because it stalls out after violent jerking when I give it gas. plz help

 

[crazykart]

It seems like the right belt or is the right belt?

 

[landuse]

Post some pics for us to see what the TC looks like

 

[KartFab]

I'm not experienced with the gy6 cvt. beats me.

 

[Justin06stone]

it is the right belt i looked up the part number in ownders manual and for pics...

 

[Justin06stone]

thats exactly what it looks like

 

[landuse]

Is it rusted at all? Are you sure that the rollers are the right size?

 

[Justin06stone]

no, no rust, looks fairly new, and it has 10 gram sliders in it.
also: waht would cause an engine to start right up with no problem when its cold but then just sit there and crank once its warmed up??

 

[MadManAndrew]

no, no rust, looks fairly new, and it has 10 gram sliders in it.
also: waht would cause an engine to start right up with no problem when its cold but then just sit there and crank once its warmed up??

The choke?

 

[Justin06stone]

what about the choke, it has an auoto matic one. and it doesnt sound/smell like its running rich either. and my battery keeps dying, i dont think the charging mechanism on it is working right. how do you fix that?

 

[OzFab]

waht would cause an engine to start right up with no problem when its cold but then just sit there and crank once its warmed up??

...and my battery keeps dying, i dont think the charging mechanism on it is working right. how do you fix that?

Look at those two statements together; why do you think the battery is dying?

 

[MadManAndrew]

Look at those two statements together; why do you think the battery is dying?

I think Fabroman might be on the right track. The starter uses a LOT of juice and the charging coil puts out very little so if you crank on it a lot or dont run the engine long enough between starts you'll just keep draining it until it's dead. I had the same problem with my old kart.

 

[Justin06stone]

oh, im not sure what i did buuut it doesnt jerk anymore!! only a tiny bit once i get to like 3 mph and are acccelerating fast thoo. but only for like a split second.. it feels like it catches grip. and is there a way still to check it?