Tune it? ;-) Bring the needles back to stock settings and then tune from there. Most of my engines die when I give them throttle if their tune is way off. Remember, you will always have to play with your tune when you run. Weather plays a huge part in Nitro tuning....
check the glow plug to see if it's working.Take out the glow plug and make sure you have a fully charged igniter.Then put the glow plug on the igniter if it doesn't glow bright orange replace it.Or your running it to rich lean it out a bit =p