Hey guys!!

So I know how to tune a engine, but I had a problem with my stock steering servo. Long story turned short it blew up. I replaced it with a Hitech servo fired it up and been chasing the tune every since then. Maybe?? The Carb gap is set where it needs to be.

Here's the problem tho. When it fires it either revs super hi and tries to take off to lean or it fires up and i give it gas and it bogges down and dies. But the idle is super hi and it lurches, but as soon as i give it gas it dies, this whole time its spitting nitro out of the pipe. When I lean it, it starts to take off. What is the issue?? Maybe an air leak on the engine?? I didn't seal it. Could that be the issue?? Please help me out guys. Sorry for the long post about this. I'm going to try and get it tuned tomorrow..

It sounds like your carb isnt closing all the way. How does it act once the engine is warmed up? It sounds to me like you may have a mix of linkage or tuning issues. I kinda doubt its an air leak this early on, especially if it was fine before...

The Carb closes all the way back where I have it set at. It never get to the point for it to warm up. It either bogges down and die or tries to take off. I put all the needles back to stock setting, I'm going to try and start from scratch tomorrow.
I don't know if this is a Carb issue or not, but when I try to open or close the Carb it doesn't move. But when I tighten the Carb setting screw up all the way the carb won't move. Could or do I have a Carb issue??

pull the motor & do a leak test

Crazy question but how do I do a leak test?? I tried to and tune it again putting all the needles back to stock. Nothing worked. This time I couldn't get it to lean out. Who knows what's going on?? I'm going to give it one more try when I can get bats for this stupid stock glow igniter..