Mine took about 2 seconds to boil-off then about three days later I couldn't get my engine to start. I sent to the factory so they could have a look at it... come to find out I overheated the engine. What % nitro do you run? I would try a nitro fuel with more lubrication. Maybe your not getting enough lubrication and everything is creating more friction than it should. Talk to the guys at your local hobby shop and have them recommend a fuel for you to try. Hope this helped. good luck.