Plane flies and crash when start engine

Hello! I have a big issue.
When I start the plane and apply starter, it jumps to the air and start flying. It is like a big impulse that receives, but the starter torque factor is 0.3
Don’t know what it can be… it drives me nuts. If I do a Control+e no problem.

Any clues?

Check your key binds. Sounds like it’s mapped to a slew control.

Just a suggestion.

I cannot say not to that, but I didn’t modify the keybinds… and this is done with funtion mouse manipulation as you can see in this part of the video:

I found this topic:

but I am moving the contact points with the same result. The xml part for ignition I have this code. This don’t happen if I press Control+E… so maybe the culprit are not the contact points.

<Animation name="Ignition_Switch" guid="6befd9d3-bae8-4d69-b767-9a6e94c927e7" length="75" type="Sim" typeParam2="Ignition_Switch" typeParam="AutoPlay" />
  <PartInfo>
        <Name>Ignition_Switch</Name>
        <AnimLength>100</AnimLength>
        <Animation>
            <Parameter>
                <Code>(A:OLD ENG STARTER:1, enum) 0 max 4 min 25 *</Code>
                <Lag>200</Lag>
            </Parameter>
        </Animation>
        <MouseRect>
            <Cursor>Hand</Cursor>
            <HelpID>HELPID_GAUGE_MAGNETO_SWITCH</HelpID>
            <TooltipID>TOOLTIPTEXT_MAGNETO_SWITCH</TooltipID>
            <MouseFlags>LeftSingle+LeftDrag+Wheel</MouseFlags>
            <CallbackJumpDragging>
                <XMovement>
                    <Delta>10</Delta>
                    <EventIdInc>MAGNETO_DECR</EventIdInc>
                    <EventIdDec>MAGNETO_INCR</EventIdDec>
                </XMovement>
            </CallbackJumpDragging>
        </MouseRect>
    </PartInfo>

Ok… as the post said… if I put the fuel valve on it does it correctly.
BUT… how do I do to not make the plane hop if the fuel valve is off? I don’t want my users to experiment that…