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I have a briggs and stratton 4.0 Quatro mower and it is

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rough running and using alot...
I have a briggs and stratton 4.0 Quatro mower and it is rough running and using alot of fuel and blowing black smoke
Submitted: 2 years ago.Category: Small Engine
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Answered in 4 minutes by:
2/28/2016
Technician: Donald, Small Engine Technician replied 2 years ago
Donald
Donald, Small Engine Technician
Category: Small Engine
Satisfied Customers: 2,601
Experience: I have 25+ years of experience repairing 2 & 4 cycle engines
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Hello, and thank you for choosing Just Answer. My name is***** will be happy to assist you. This is an indication that your engine is running rich. Have you checked your air filter?

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Customer reply replied 2 years ago
cleaned it throughly
Technician: Donald, Small Engine Technician replied 2 years ago

Does your carburetor have a choke?

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Customer reply replied 2 years ago
no
Technician: Donald, Small Engine Technician replied 2 years ago

Can you get the model and type numbers from your engine for me? I would like to pull up a diagram.

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Technician: Donald, Small Engine Technician replied 2 years ago

I would like to pull up a diagram that includes your carburetor. Did this problem occur suddenly, or gradually, over a period of time?

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Customer reply replied 2 years ago
Can't find numbers sorry and happened gradually
Technician: Donald, Small Engine Technician replied 2 years ago

Are you familiar with cleaning carburetors?

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Customer reply replied 2 years ago
Not really but it can't be to hard
Technician: Donald, Small Engine Technician replied 2 years ago

The reason I asked, is because your carburetor is likely flooding due to a partially sticking float, a leaking float, debris between your needle and seat, or sediments in the bottom of your float bowl. You will need to remove the bowl from your carburetor, in order to check for these possible faults.

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Technician: Donald, Small Engine Technician replied 2 years ago

Have you replaced, or checked your spark plug recently?

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Technician: Donald, Small Engine Technician replied 2 years ago

Was your air filter very dirty, before you cleaned it?

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Customer reply replied 2 years ago
Filter wasn't to dirty and have replaced the plug and I will try the carburetor clean and see how that goes
Technician: Donald, Small Engine Technician replied 2 years ago

Very good! Please let me know what your results are. Thanks!

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