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JohnF2015, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1132
Experience:  Owner/Service Technician at S & J Small Engines
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Have an onan microlite 4000 runs very rough. throttle

Customer Question

have an onan microlite 4000 runs very rough.
throttle constantly moving back and forth VROOM VROOM VROOM
engine shaking also
Submitted: 1 year ago.
Category: Small Engine
Expert:  JohnF2015 replied 1 year ago.

HI, my name is***** will be assisting you.

This is an indication of fuel starvation, you will need to remove and clean the carburetor passages thoroughly in order to fix the problem. You could try running a cleaner through the system, something like SeaFoam or similar product which may solve the issue but it will take longer for it to work. It could take a few hours of running with the cleaner to do any good. The quicker solution is to remove the carburetor and give it a thorough cleaning making sure that no passages are partially blocked.

Thank you it has been a pleasure to assist you.

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