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Onan Fuel Pump


 
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Jonak
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Joined: 29 Dec 2004
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Location: Bedford, In.

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PostPosted: Fri Jul 26, 2013 4:45 pm    Post subject: Onan Fuel Pump Reply to specific post Reply with quote

How can I check if Fuel pump is good when pump is off 318 JD, Onan Engine?? Thanking one and all for Your time to submit a reply:>))
 
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Anon
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PostPosted: Sun Jul 28, 2013 1:38 pm    Post subject: Re: Onan Fuel Pump Reply to specific post Reply with quote

Put a piece of tubing on the inlet side and stick it in a can of water-pump lever and see if it picks up and starts pumping.
 
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Newfy
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Joined: 21 Nov 2005
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PostPosted: Sun Jul 28, 2013 3:53 pm    Post subject: Re: Onan Fuel Pump Reply to specific post Reply with quote

This is a pulse type pump and it is nearly impossible to test it off an engine. You can disassemble it and check the diaphram for cracks or stiffness and inspect the 4 check valves. It is a pretty simple pump.
 
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Billy Shafer
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PostPosted: Sun Jul 28, 2013 4:40 pm    Post subject: Re: Onan Fuel Pump Reply to specific post Reply with quote

That will not work on this pump. It needs the pulse from the engine to work.
 
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Anon
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PostPosted: Mon Jul 29, 2013 5:13 am    Post subject: Re: Onan Fuel Pump Reply to specific post Reply with quote

Does it have a port that a hose from the crankcase attaches too? If so you can hook it to another engine that runs to test it.
 
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Jonak
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Location: Bedford, In.

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PostPosted: Mon Jul 29, 2013 6:36 pm    Post subject: Re: Onan Fuel Pump Reply to specific post Reply with quote

Thanks to the comments. Got it checked out OK, put it on and is running good. Thank each one of you!!!!
 
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