RE: PLEASE Help I am still having trouble tuning
Some basic terms
neutral-center trim on transmitter(small wheels usually say th. trim or st. trim) and no throttle or steering touched on transmitter
rich - more fuel (counterclockwise) loosen
lean - less fuel (clockwise) tighten
1. Make sure your transmitter and car are turned on. Make sure the throttle trim is also neutral(center)
2. remove the air cleaner, look down the throught of the carb and you should see a 1/16 opening, if bigger turn the small idle screw counterclockwise if smaller turn it clockwise. start and check the idle, if still too high turn screw counterclockwise.
3. Make sure the low setting screw (side of carburator) is basically flush with the carb itself.
4. Close (clockwise) the high end screw until you cant turn anymore(easy) then open(counter clockwise) 2 1/2 full turns.
These settings should get you started.
Once started you can lean(turn clockwise, add less fuel) the carb if it just wont see to run but make sure you dont lean it too much since this is where the engine gets it lubrication from.
Once you get the car running decent, see how it takes off from a dead start, seem a little hessatant? not too snappy? While running pinch the fuel line, the car should run for a few seconds and stall, if the idle of the car raises a decent amount then the low end setting is too rich, lean it(clockwise) and 1/8 of a turn, start it, let it run and try the pinch test again.
You should always see a streak of blue smoke coming from the exhaust of the car.
Always change your glow plug after break in or if you find it hard to tune the car.
Always run the car for at least 30 seconds after each carb adjustment, including idle (the low end may be to rich and you will need to run it to get the excess fuel out of the engine)
only adjust in 1/8 turns, these nitro engines are very sensative.