Have a 2 year old pressure washer with only about 50 hours on it. Have changed oil 3 times and never left gas in it for storage. Also use Stabil in the gas. Was running fine until last weekend after about 45 minutes of use with a fresh tank of gas. Suddenly started surging and then shut down. Restarts immediately and idles fine. After about 5 minutes process repeats. Took carburetor apart and cleaned. Cleaned spark plug, which looked in excellent shape. Ran for about 45 minutes again and then started the shutdown problem again, acting like it's out of gas. When it starts surging and catch it soon enough, if I force the governor-feed to run a high RPM, it sometimes will continue to run, but eventually will shut down. Planning to change the plug, but the problem seems more like a fuel problem, rather than ignition. Any ideas?
I would look for the fuel filter. Blow it our. I know you have a new tank of gas, but you might want to empty it out and make sure the clean and put in new. Even with Stabil in the gas you might just have to much condensation in the tank
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