XRAY - Model racing cars

Or it could be that your idle screw on your engine is set for too high of an idle.

i realigned my servo should the servo arm be exactly parell with the servo?

not necessarily, nitroracer brings up another good point the screw may be too far in as well. if it wasn't doing this in your other car(unless this your first) it is probly your settings. The way i align my horn on my servo is i connect the linkage to the throttle and push in and mount the horn at that point. if you have to move it slightly outwards then your throttle trim should be able to pick up the slack. you may also want to set your radio settings at the nuetral position as well. trim at zero and throttle and brake at 100.

Ok i've checked and alligned the servo horn i'll run it tomorrow and see if it works right.