ORIGINAL: alcarafa
...Started thinking about drilling and all that stuff you mention... Bought another brand cause it was only one in store (CoolPower 10% ) ...
Rafa,
What 'drilling' are you talking about!?
I don't think a new engine needs any part 'drilled' to make it run properly...
Also, CoolPower (better known here as CruelPower
) is not the right fuel for this engine!
It needs fuel with a good measure of castor oil and the CP has none at all.
The manufacturer tells you so [link=http://www.morganfuel.com/omega_main.htm]specifically[/link] that 'Omega' is the right fuel for ABC/ABN engines.
It is more than likely that either; 1. your engine 'matured' to just beyond break-in during that last flight, or 2. the previous gallon of Omega was old/stale/absorbed moisture and this is what gave you those troubles.
I hope you did the break-in as described [link=http://www.rcuniverse.com/forum/Tapered%2DBore_Engine_Break%2Din_%2D_Upgraded/m_1850473/tm.htm]here[/link].