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If the engine were to backfire for whatever reason and the pcv valve is stuck open, the backfire could carry into the crank case and ignite the crank case fumes. I have seen valve covers blown off an engine from this situation.
The valve has failed.The valve has failed.
first you have to turn the valve and see if it was just in a wrong position
If it's stuck in the completely open position, it can.
Solenoid switch valve latched in the low/reverse position. It means that a valve is stuck in the valve body
If your main gas valve is stuck in the closed position, it must be replaced. This condition is the reason your thermostat will not cause the main burners to light.
Solenoid switch valve latched in the low reverse position. You either have a failed solenoid or a stuck valve in the valve body.
Separation Valve
The bicuspid valve opens and the tricuspid valve closes.
erg valve stuck in closed position
yes. a valve in the open position will prevent compression, thus no combustion.
it will free a stuck valve