Hi,

In nitro r/c cars, fuel is pumped to the engine through the fuel tank by means of exhaust gas. If you have tried to cover the exhaust stinger and it worked in pumping, I assume there are no leaks on your fuel tank and silicone pipes. As you said, the glow plug is good.

Try to open up the idle to 1mm gap and try again. Engine won't start and flame out will always upset you.

If you have not touched the needles on the carb, try to lean (turn in) both by 1/2 turn for a start, most factory settings are rubbish, too rich causing no start, flame out and a big torture to conrod.

Goodluck

Joaquim