After the new carburetor was installed successfully yesterday, everything was running great and smooth. This morning I was trying to get it running again. When I put the carburetor on the “choke” for the start, I heard a short burst sound beneath possibly from the engine. From that point, I could feel the crank shift is slow and heavy. And I can’t get it run no matter how hard I try. I wonder if my engine is blown? Hope not! Everything was running great yesterday :( Feeling defeated. Can anyone kindly share some advice or what should I do next? Thanks!