So I've got this B&S pressure washer. It had a 7.25 HP motor on it. It wouldn't run because the carb was gummed up badly. I hit the YouTubes and rebuilt the carb. Cleaned it spotless. New needle and seat, new float, the works. Put a new air filter on it and new plug. Pull the cord and it fired the first time !!! I washed the front porch and put a couple of tanks of gas in it. Today I pull it back out and I got nothing. I shot some starter fluid in there and it hit for a literally half a second then dead again. I took the carb back apart and checked everything. It all looks good. I know it's getting gas. There's plenty of oil in the engine. I also checked for spark. Looks good, plus if it hits on starter fluid why would it not hit on gas. What am I overlooking? Edit: one thing I did notice is that it's getting hard to pull the cord the more times I pull it. There's always a little resistance because of the compression but it seems like there's more than usual if that makes sense. Edit 2: I disconnected the water. I tried pulling it again. It was a lot smoother but still wouldn't fire.