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- Jan 31, 2010
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I have had exactly what you describe occur due to float needle not seating/admitting raw fuel into the cylinder/locking it up when trying to spin the (Alton) starter. It was the one time I forgot to turn off the fuel!
However, in my case I had to pull the spark plug/spin the motor to expel the fuel. I agree that it seems that it shouldn't bleed down on its own but if the crank was able to rotate JUST far enough to crack open a valve, it might have relieved some of the pressure just as you released the starter button. That's the only thing I can think of that would explain the lockup going away by itself if it was hydraulically locked.
In my case, the float had hung up on the gasket.
![Mad :mad: :mad:](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f621.png)
In my case, the float had hung up on the gasket.