Go Bottomtractor dies
 | dkwind
Join Date: Aug 2017 Posts: 4 Arkansas 
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2017-08-27 197004
3140 diesel tractor starts,runs for one minute or so,then dies like you pulled kill switch.I have changed lift pump,filter,blew out all lines,replaced rubber washers on all lines.I bleed all lines of air then restart and it does the same thing.HELP
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 | Murf
Join Date: Dec 1999 Posts: 7239 Toronto Area, Ontario, Canada 
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2017-08-29 197016
Generally, if the engine runs fairly normally for a minute or so then dies, it's the fuel shut-off relay.
Try to locate the fuel shut-off mechanism and see if you can watch it while someone else starts the tractor to see if it kicks back off, or disconnect the mechanism to it and see if the problem goes away.
Best of luck. ....
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| jdgreen
Join Date: Jul 2003 Posts: 232 Maryland
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2017-08-31 197020
Another possibility is a restricted return line. You mentioned blowing out the lines, but did that include the return lines? Also remove the fitting in the pump where the return line connects. It is a check valve that sometimes gets clogged. Remove the check valve and put a bucket under the pump. Start it up and see if it will continue to run. The stanadyne pumps have a history of failing an internal ring in the pump and clogging the check valve, but from everything I see, the 3140's were equipped with Lucas pumps. Is yours a Lucas? Never saw one do that,, but it is possible. ....
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| dkwind
Join Date: Aug 2017 Posts: 4 Arkansas
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2017-09-01 197023
thank you for the reply.I dont see a fuel shut off relay on this tractor. ....
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| Murf
Join Date: Dec 1999 Posts: 7239 Toronto Area, Ontario, Canada
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2017-09-01 197024
If the tractor engine shuts off by turning the key there must be a relay or solenoid the dumps the fuel to stop the engine.
If you have to physically pull out a knob to stop the engine, then no, there would not be a fuel shut off relay.
Best of luck. ....
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| mnavojos
Join Date: Mar 2017 Posts: 6 upstate ny
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2017-09-01 197025
Clear all the lines from the fuel sending unit into the tank and pickup had earwigs in my tank by way of vent.....sounds like you have the rest clear....let us know what you find....we always refer to it as getting the bugs out of our deere ....
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