Check the needles. The LSN could be set too lean. When you break in the engine you want it on the rich side but obvisously you have to play with the idle a little to get it to stay running. I prefer the heat cycle method for break in over the idle on the box way.
Here is another break in method you might want to look at.
http://trackstarrc.com/trackstar/ind...&Itemid=89
If you have to keep the brakes on to keep it from reving you may have to take the throttle arm off and reposition it. It may have been set wrong from the factory. Just unscrew it, pop it off, center the servo and replace the arm.
Good luck. Let us know how it goes.
ORIGINAL: astarbllr
Hey guys, quick question. ( i know that this the mt2 thread, but this is a more generic nitro question). i just bought an hpi nitro monster king. i was trying to do the break-in, so i added fuel, got it started, it was reving REALLY high.. so i hit the brake..i tried messing with the trim (it's the same radio as the stock mt2 one) and tried messing with the idle screw, i ended up just riding the brake so it didnt rev so high.
my main question is that i put it on a block and let it 'idle', but it was taking FOREVER.. it was barely through half a tank and THAT took like 45mins to an hour~ any suggestions??
also any suggestions about how to deal with the high reving? I tried playing with the idle screw, but if i set the idle any lower it would turn off.