Well I fixed my crazy engine issue but now I cant get the thing to run. The breakin hasent been going so well the first time I ran it, it went WOT and much faster than I wanted too and since then I have tryed to get it running a couple times. Here the problem the truck starts up easily and then I turn up the throttle trim to a high idel give it a few seconds and remove the glow starter and then it just stalls or stalls when I apply a tiny bit of gas. I have the needels set as the manual says for the first 2 tanks of fuel and the plug seems fine I compared it to another new mc coy i had and it was the same as the new one but I swapped it out anyways and that still dident work so im guessing its either too rich or lean perhaps you guys can help me out.

sounds to rich, the factory settings are way to RICH, u should heat cycle the engine, especially in that cold a weather u are in, doin it by the manual will just shorten your engine life, Especially when the weather is as cold as your saying

Here.. [link]http://rbmods.net/enginetempering.php[/link]

thanks ducked, i had a feeling u would post sometime close LOL

Thanks I will lean it out in 16ths of a turn untill i can get it to run. And ya its reallll cold here I think I will get a pic of my mgt among all the snow for u guys Might just blow ur mind if your not used to it.

I had the same problem...The manual is way off. I called thunder tiger and they said turn the low speed 3 turns from closed.

geex mate, 3 turns is way lean, i run at about 5 and 1/4 and it runs like a raped ape. 3 turns out is just asking for trouble

here we go again lol...

my LSN was 6 1/4 out, on the stock motor...

The engine ran fine with the lsn set at 3 turns...never had tuning or overheating issues with the lsn set at 3 turns. But my advice to newfienitro is to start at factory and turn at 1 hour increments.

I'm not saying your setting is wrong or right....I'm just saying what worked for me.