Is this natural?

[ohmygahitscoby]

When my fuel tank is empty and the engine is trying to suck some fuel, the engine started to rev up very high, but I stopped the engine. I was breaking the engine in and I know it's not good to high rev the engine. I was wondering if it was natural for an engine to do this.

 

[Rolex]

Engines always rev up when they run out of fuel due to being lean.

 

[ohmygahitscoby]

Oh, alright. Also, when I open up my fuel tank, smoke comes out. Is it just the alcohol from the nitro or is there something burning?

 

[Racer 1966]

Smoke in the tank is usually from the pressure line,it is hooked to the pipe.

 

[ohmygahitscoby]

Oh okay. Is it okay to have it like that, or do I need to do something to prevent it?

 

[joneser4u]

no its ok,the smoke wont hurt anything.

 

[frickenjoey]

It's all good man it just happens....no big deal. Just be careful doing the run out of fuel on break in you are correct it is not real good for it. I always try to keep an eye on the tank when doing it.

 

[bnrpat09]

normally after break in this is normal occurrence, when doing the break in proccess you want to leave a small amount of fuel in the tank.
you shouldnt let it go completely empty.
but you should be alright