Misfiring

Looks like you are on your way to solving this one. Basically, if you have zero compression then that is the cause of the misfire and the reason there is fuel. Basically, the engine needs fuel, spark, and compression in order to ignite the mixture.

https://www.2carpros.com/articles/how-to-test-engine-compression

The next thing to do in order to find out if there is a burnt/bent valve or ring issue is to run a cylinder leak test.

Basically, this is putting a certain amount of compressed air to the cylinder in TDC on the compression stroke when the valves are closed and then we find out how much is leaking and where. You check the cooling bottle, intake, exhaust pipe, oil fill cap to see where you can hear and feel the air escaping.

Here is a good video that will help with this:

https://www.youtube.com/watch?v=WHli-wLy9_o

Let me know what you find with this, and we can go from there.

Thanks

Okay. You can still check this, but you will not be able to measure the amount of loss, but we basically know we are losing compression somewhere.

You do this by removing the Schrader valve from your compression tester hose that threads into the spark plug hole. Then instead of hooking your compression gauge to that hose, you hook up an air hose from a compressor. Then put the engine on TDC of the compression stroke and put about 25-50 PSI to the cylinder and see where the air is coming out.

However, just make sure when you put the air to the cylinder that the engine does not turn over. Basically, you are putting air on the top of the piston so it is going to push the piston down which will open the valves and can cause us to get false readings.