John Deere 316 fuel pumps

PMorr

New User
Our JD 316 (P218G Onan engine) has had 2 replacement fuel pumps fail after short service. The original one lasted 27 years ! !
These are a little vacuum affair which are now "obsolete" in both John Deere and Onan Parts systems. Their computers say "obtain from
after market sources." I've had two now, one lasted a year and the latest one 1 day!! Are these foreign made ones Junk?? Where does one
go to get a good one again??
HELP !! Paul
 
You might consider getting an aftermarket electric "Low Pressure" pump just wire it up so it is only on when the switch is on. Could be better quality than the vacuum pumps from the land of almost right.
 
What issue are you having, leaks or won't pump?

The current DEERE part # is B171252, for some $120.

Or you can get a generic on ebay for $10.80 (auction #254194137995).
 
On my 35 year old JD I had to replace the fuel line about 10 years ago. Developed a small crack above the deck. I would run once you got it started.
 
Contact this guy:
http://boomersonanparts.com/
Phone and hours on the web page.

He'll have new or used Onan OEM parts.

No connection other that a satisfied customer.
 
All Onan parts are expensive. I recall telling one customer at the parts counter 'They start with $100 and go up from there.'

What you can do is use the round plastic pump that Kohler, Briggs, and Kawasaki use. I just added an elbow to the pulse hose from the crankcase and mounted the pump on the firewall of my 318 just above and behind the location of the original pump. It works fine.

One thing to check: with any pulse-type pump you need good tight connections of the hoses back to the tank and also the pulse line to the crankcase. If it can get air anywhere, it will not pull fuel.
 
I used to work for Onan 1980-2008. I agree get a low pressure pump. Below 5 pounds. Never did like those carb pumps
 
Well, here is what I think is the end of this saga and my learning curve on the 316 fuel SYSTEM!! After a phone call to Boomer (above),who schooled me on the what could be wrong with other elements of the fuel system. BTW, Thanks Boomer! It turned out that the heart of the problem was a split in the in the fuel tank pickup tube. When told to inspect the entire fuel tubing layout, I took the seat deck off and as I touched the fuel tank pickup elbow, the sealing grommet fell apart in my fingers. The the pickup and the filter screen on the end fell down into the 1/2 full tank. Siphoned the tank out; took the tank off; shook the tank upside down; the pickup parts fell out and there it was - a split in the pickup tube allowing air to get into the fuel line when the fuel level was less than full. So, I got a new tank grommet, re-hosed the entire fuel system using all the existing hardware, including the newly gotten pump. The vacuum pulse tube from the crankcase was good, but I put a new tube on it anyway. It all works fine now and I was barking up the wrong tree when Poo-Pooing the fuel pump itself. As with so many things, THE DEVIL IS IN THE DETAILS ! ! Thanks for all your replies, it helped ! !
Paul
 


It's very nice to see someone respond with thanks and to let us know how the project turned out. Good post!
 
All Of my JDs from that time have had the pick ups and lines replaced,gas or diesel.
 

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