Small Engines (Lawn Mowers, etc.)/110 cc buggy not working

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Question
QUESTION: I have an 110 ccc auto buggy and it's starts fine and accelerates at low speed but when you  try to get more speed the engine shuts off

ANSWER: Will the engine continue to run if you release the accelerator?  Does it sould like it is running out of gas or something else?

Eric

---------- FOLLOW-UP ----------

QUESTION: Yes the engine will continue to run if you release the accelerator

ANSWER: Since it will run when you release the accelerator it is a pretty good assumption the ignition system is functioning...I've only see one case where the ignition module prevented the engine from accelerating.

With that said, I'd start by cleaning the carburetor.  Most all carbs have different passages (circuits) for high and low speed operation.  It sounds like something may be preventing the high speed circuit from delivering enough fuel.

Before removing, dis-assembling and cleaning the carb, have you bought a new spark plug and replaced the old one?

Do you know what brand of engine is on the buggy?  Is the carburetor metal or plastic?

Eric

---------- FOLLOW-UP ----------

QUESTION: Yes we have bought a new spark plug, the engine is some Chinese brand and the carb is metal

Answer
I was assuming the engine is the Chinese version of the older "Honda" engine.  Based on what we have discussed so far the next step I'd take is removing and cleaning the carb.

Removing is pretty straight forward...you do NOT have to loosen any governor parts as the carb link rods can be removed just by turning/maneuvering the carb.

I'd use an air compressor and blow air through all the carb holes.  Use lower pressure when blowing air through the carb fuel nipple area so you don't blow the inlet needle seat out of the carb.  For the rest of the carb holes use about 60-70 PSI...not critical but just don't use 150 PSI for cleaning the carb.

Take several pictures are  you are removing parts so you know how the linkages and connection are routed/connected.

Let me know if cleaning the carb helps.
Eric

Small Engines (Lawn Mowers, etc.)

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Eric A. Jones

Expertise

Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.

Experience

Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

Education/Credentials
MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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