AndyH Key Veteran Location: San Diego, CA
My Posts This: Topic Forum | Today I was out flying my trusty EVO and started it - everything good, went out and hovered a bit, switched to idle up did a test climbout and everything checked out, so I set it down and did a tail stand launch, well as the heli was going inverted the engine started to rev up and down wildly!! Bad time for engine probs!
Anyway, I flew the heck out of this bird last night with no probs, and now any time I go above 3/4 stick the engine just starts oscillating very very badly - it goes soooo lean it's gonna cut then comes back and goes lean again.
So I landed and checked it out - I found a hole in a fuel line that I replaced and flushed the carb with no success - same thing.
So after much fiddling I found that the tank stopper had pretty much disintegrated - or at least the bottom part of it under the lip of the tank was totally ripped. So, I'm pretty sure that this was the prob, but what would cause it to just pop like that - from fine to pieces?? Has anyone out there experienced this before with the stoppers? Did I over tighten??? The heli's probably got 8 or 9 gallons through it, maybe more.
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