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I have an onan 4000 generator will not start. Where is the…

Customer Question
I have an onan...

I have an onan 4000 generator will not start

Mechanic's Assistant: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?

Where is the shut off

Mechanic's Assistant: Do you plan on doing the work yourself?

Yes

Mechanic's Assistant: Anything else we should know to help you best?

Just bought this Rv yesterday and generator won’t start only has 15 hours it’s an 02

Submitted: 8 months ago.Category: Small Engine
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Answered in 2 hours by:
12/3/2017
Technician: Curtis B., Technician replied 8 months ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,927
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

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Technician: Curtis B., Technician replied 8 months ago

Does the generator have its own battery or does it use the battery of the RV? Do you have battery voltage tot he generator switch? Do you have battery voltage to the starter solenoid? Is engine spinning, just not starting on the generator?

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Customer reply replied 8 months ago
the starter is turning the motor over just won’t start like it’s not getting fuel
Technician: Curtis B., Technician replied 8 months ago

Have you pulled the spark plug and checked for spark? If it has spark, put a teaspoon of fuel directly into the spark plug hole re-install the spark plug and see if it will start for a few secinds. If it does, no fuel is going through the carburetor. Is there fuel to the carburetor from the fuel pumo?

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Customer reply replied 8 months ago
Haven’t checked those things yet I’ll get back to you
Technician: Curtis B., Technician replied 8 months ago

OK>

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Customer reply replied 8 months ago
Shouldn’t there be a shut off for the fuel
Technician: Curtis B., Technician replied 8 months ago

May be one on the tank outlet line.

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Customer reply replied 8 months ago
Put gas in carburetor started and ran for about three seconds not getting fuel
Technician: Curtis B., Technician replied 8 months ago

Check the flow to the carburetor, and if you have fuel to it, the carburetor likely needs t be cleaned, it may b gunked up from old gas and non-use.

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Customer reply replied 8 months ago
No flow to the carb
Technician: Curtis B., Technician replied 8 months ago

oK, look back upstream and find the fuel pump, electric, and see if it is working. If fuel pump sounds like it is working, check the line from the tank that it sucks from.

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Customer reply replied 8 months ago
K I’ll give it a shot in the morning
Technician: Curtis B., Technician replied 8 months ago

OK> I should be on line after 10 : easter time.

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Technician: Curtis B., Technician replied 8 months ago

I see the question is still open, please use the 5-star rating system to close the question and get me credit! Thanks.

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Category: Small Engine
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