tlange88

ok, i have a volcano stx .18 and its ding at full throttle, i'm sure its probablycarb issue's, but which screw is which and about how many turns do they need to be? thanks travis

RCToysNh

Full throttle bog could be air in fuel line.
The HSN is the one you want, The larger brass screw,on the right side of carb, start at 2 turns out from seated position. Turn 1/8 turn out each run to get max perfomance at top end. The LSN is the one in the center of the throttle rod. Should be flush with chrome collar.

chevyderek72

Isnt it 2.5 on the hsn?

nubzorz

Sounds like its to lean i would turn out the hsn a half a turn and see if it still does it.

RCToysNh

It is an old stx, the motor is most likely not at full comp.

tlange88

now i think i got it tuned a little better and not dieing at full throttle, but it will die wheni let off the gas sometimes, or try to let it idle. pull the string several times and it will start back up? i'm wonderingif its getting to hot but idk? what is the temp supposed to be on these vx.18 motors its got the cooling head and nowa tuned pipe?

nubzorz

Most likley your idle screw isnt set right and the carb. is probly closing when you hit the brake causing the car to die. Adjust the idle screw untill it doesnt close when you hit the brakes or just adjust the trim on the Radio.