What is there down the hole midway stopping me from access to the spark plug on my 2004 yz250, feels like a liner of some sort, the spark plug tool will not go further or I would have to use major force to get down maybe

SOURCE: 2004 yamaha yz250 wont start.

On these two stroke motors they are pretty simple. You need 4 things to make them run. You need Spark.. Which you have. That covers the whole electrical part. You need fuel. Which is the most common thing that is making the bike not run. All it takes is a spec of dirt in the main jet to keep the bike from running. Or like you mentioned, the float is stuck in the full position. And not letting fuel in. Take the carb off and clean it with carb cleaner and blow out the jets with an air compressor. Also it needs compression. If you have a lot of hours on the engine, you might want to check the compression. If it is hard to kick over then the compression is probably ok. If it kicks over real easy then you might need to re-ring it. And the final thing that it needs is air. Make sure that the air filter is clean.