Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Good morning Patrick. Did our problem occur suddenly, or gradually, over a period of time?
Thanks for this information. Did you leave gas inside your fuel tank since last fall?
I understand. By the time you emptied your old gas, your old gas likely had already caused some problems inside your carburetor. I can explain this.
Due to the fact that gas has ethanol in it, it will start to turn stale within 45 days or less. Stale gas within turn to gum and varnish, and eventually cause carburetor related issues.
Your old gas remained inside your fuel tank, and inside the bowl of your carburetor, since last fall.
You are correct. I would pull and clean the carburetor, and inspect the fuel shut off solenoid that screws into the bottom of your carburetor.
Your fuel shut off solenoid could be failing after your engine reaches operating temperature.
This can explain the popping after your engine heats up.
Your fuel shut off solenoid should click each time you cycle your ignition switch on and off. It has a spring loaded plunger that must retract, when your ignition switch is on, to allow fuel to flow within your carburetor. Sometimes this part will fail after it reaches full operating temperature.
You are correct. To test it, remove it from your carburetor, then re-attach your wiring connector to it. Turn your ignition switch on and off. Watch to see it the plunger retracts, and releases. Watch to see it the plunger retracts, and remains fully retracted while your switch is on.
I would leave your ignition switch for 5 minutes or longer, just to see if your spring loaded plunger will remain retracted, after your fuel solenoid heats up.
1) Yes, replace it.
2) If your solenoid is ok after 5 minutes or longer of testing, still give your carburetor a good cleaning, and replace your spark plug. If our problem still exist, then we need to focus on your ignition coil. Ignition coils can fail after they heat up.
You are very welcome! I do hope all goes well for you. Also, thanks for your patience.
Very good! I hope your weekend is equally as good as mine.
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