🚨 Predator 3500 Inverter Generator Starts perfectly but shuts down completely after exactly 10 seconds
Top Culprit: Bad carbon buildup on the internal exhaust spark arrestor screen
Why It Happens: Running the engine on low eco-modes prevents the muffler from getting hot enough to burn off carbon, choking the engine exhaust flow.
🛠️ The 60-Second Diagnostic Test
- Unbolt the square metal exhaust access panel on the rear outer casing grid of the generator housing.
- Pull out the tiny mesh screen bracket from the exhaust pipe; look through it to check if it is completely caked black.
💡 The Quick Fix Steps
- Blast the carbon crust off the wire mesh screen using a wire wheel brush or a propane torch flame setup.
- Reinsert the clean screen assembly back into the muffler snout tailpipe and securely fasten the retention screw.