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Small Engines (Lawn Mowers, etc.)/briggs & stratton 18 hp twin 422707


the engine is not getting fuel. I've rebuilt the carb and fuel pump. I've checked the vacuum line,it seems ok. But there is very little vacuum. now what do I do?

Have you used a vacuum/pressure tester on the pulse line to see if the engine is producing vacuum/pressure to operate the fuel pump?

Is the fuel filter bad?  Is the fuel tank creating a vacuum and not allowing fuel to flow via gravity?

What is the engine type number?  Can you remove the top of the carb, remove the spark plugs, and then crank the engine to see if the fuel pump is pumping fuel?

Were there 2 small springs inside the fuel pump?

Let me know.

Small Engines (Lawn Mowers, etc.)

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Eric A. Jones


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.


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.

MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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