That would be that there isn't enough gas getting to them
What causes a misfire can be a number of things. But from what you are telling me, you may have water in your oil and maybe some bad gas inside your engine. If you have pumped in some bad gas, you may have a filed out the sparkplug at that #8 cylinder.
Contaminated fuel could cause a misfire.
0.4 gallons
If the check engine light is blinking , that means a cylinder misfire has been detected
more than likely its not the gas, if it had bad gas it would most likely give a misfire on all cylinders, need to check things associated with that particular cylinder, plugs, coil, that sort of thing
Depends, what do you need the additive to do ?
If the check engine light is blinking that means an engine cylinder misfire has been detected
It is not totally unusual. It should not happen though. It means that your carburetor is leaking gas through while the mower is not running. It will fill the cylinder and get into the oil. A quick fix is to get an inline gas shutoff valve and just shut off the gas when you are not using the mower. Otherwise you will need to rebuild the carburetor to fix the problem. You will also have to clear out all the gas from the cylinder and if it got into the oil you will need to drain and change the oil.
You can fill a cylinder with gas.
head gasket blown. reface the cylinder head and replace gasket. that should fix the problem
The gas in the liquified state under pressure and it can be filled inside the cylinder. Then it takes the entire available place in side the cylinder. This way gas filled in side the cylinder.