i tried to start my lx comp today. It would begin to start, but the radio keeps twitching and giving it a little throttle, then it dies.

Does anyone know what could be wrong with the radio? and it doesn't seem to twitch when the engine isn't running, which seems impossible.

Thanks

Here is a couple ideas:

- Check your batteries to make sure they are fully charged (transmitter and receiver). If you use a 4 cell alkaline receiver pack, replace this with a 5 cell 6v nimh pack instead, especially if you have high strength servos that drain batteries faster.
- Check the wiring of the servos, receiver, switch and batteries to make sure there are no places where the wire is exposed through the insulation.
- Check to see if your antenna is screwed all the way in to your transmitter.
- Try wrapping your receiver with foam to avoid vibration.
- Try wrapping the wires in an "s" shape, if they are currently wrapped in loops (like a garden hose), as this can cancel some interference. By this I mean like this: $ where the zip tie to fasten the wire is represneted by the vertical line in the dollar sign.
- If you have access to different servos, try swapping them out to see if the servo is bad.
- Try swapping your crystals with someone else to see if this provides better results.
- If you have a failsafe, try removing it. If you don't have one, try adding it.
- If you have a throttle return spring, try removing it, as vibration from this against the engine's metal case can cause electronic noise. Do not confuse an optional throttle return spring for the throttle/brake linkage spring (necessary).
- If none of this works, consider a radio upgrade if you are using a base model AM unit or older FM unit.

Fit a failsafe to it, Leave the TX OFF but the RX on then to use the throttle just adjust the F/S gently.