I have an older 345 garden tractor. It's ran great all summer but yesterday I went out to start it and she hit for a brief second and then just stopped. I turned it over probably way more than I should have and she just wouldn't fire at all. It's just like she wasn't getting gas or zero fire. I put a new fuel pump on it at the beginning of the season so I'm pretty sure it's not a fuel pump issue. I pulled both plugs and replaced them. I left the plugs sit outside of the cylinder heads and turned the motor over. Both plugs are sparking. I also poured just a little gas in the carb still nothing. I then sprayed a little starting fluid into the carb nothing. This thing is just flat not hitting a lick. I'm at a loss. Could it be that I've burnt a valve or something internal?
Has anyone got any suggestions. Any help or guidance would be very much appreciated.