Crank no start L3901

7.3kuhh

New member

Equipment
Kubota L3901DT
Oct 3, 2024
5
1
3
Texas
Kubota L3901 crank no start had a E-94 code had fuel all the way to fuel filter tractor will turn over but won’t start. Took into Kubota dealer wanted $4,500 for 3 new injectors tractor has 300 hours took it back home pulled injectors had them flow tested and the old man said they all passed. First they said one was stuck then upon pick up said 1&3 leaking out of return. I need help/ advice to
 

Russell King

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You didn’t finish you post and not clearly stating what is going on with the injectors. I did look up OEM injectors and they are around $1000 each so the $4500 is not totally crazy since you would spend $3000 just on those and still need a few incidental parts.

You seem to have a high pressure rail electrically controlled injection system. If you replace the injectors the dealer has to do some serial number entry into the ECU computer of the tractor.

You can contact Oregon Fuel Injection to see if they have used ones or if they can repair yours if that is needed.

I have no experience with your system but have read they are not easy to work on so can’t provide any help.

Good luck with your tractor!
 

7.3kuhh

New member

Equipment
Kubota L3901DT
Oct 3, 2024
5
1
3
Texas
You didn’t finish you post and not clearly stating what is going on with the injectors. I did look up OEM injectors and they are around $1000 each so the $4500 is not totally crazy since you would spend $3000 just on those and still need a few incidental parts.

You seem to have a high pressure rail electrically controlled injection system. If you replace the injectors the dealer has to do some serial number entry into the ECU computer of the tractor.

You can contact Oregon Fuel Injection to see if they have used ones or if they can repair yours if that is needed.

I have no experience with your system but have read they are not easy to work on so can’t provide any help.

Good luck with your tractor!
You must have missed the part where I said first they claimed one was stuck open than when I picked it up they said 1 & 3 was leaking out of the return. I also stated where I had them flow and leak down tested and they passed. So I’m not buying that it’s the injectors
 

Dchemphill1

Member

Equipment
L3901HST, brush hog, L525 loader, rear blade, forks and bail spike
Jun 9, 2016
95
29
18
Fort Calhoun, NE, USA
Would a faulty safety switch cause this....seat has one, PTO has one, maybe others. Just spit balling and looking for easy possibly cheaper fix???
 
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TheOldHokie

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Apr 6, 2021
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windyridgefarm.us
Would a faulty safety switch cause this....seat has one, PTO has one, maybe others. Just spit balling and looking for easy possibly cheaper fix???
On a L3901 those switches prevent the starter from cranking.

Something that could allow cranking but not starting is a malfunctioning shutoff relay....

Dan
 
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7.3kuhh

New member

Equipment
Kubota L3901DT
Oct 3, 2024
5
1
3
Texas
I put the in
On a L3901 those switches prevent the starter from cranking.

Something that could allow cranking but not starting is a malfunctioning shutoff relay....

Dan
I got injectors put back in after getting them flow tested and leak down tested mind you Kubota said 1&3 was leaking out of return. Had a lot of fuel pressure on high side of all the injectors. Return side on all 3 was bubbling back at the same rate. Still will not start. Acts like it wants to but will not. Thanks all for input and advice
 
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whatsupdoc

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L3302
Jul 9, 2024
27
21
3
USA
On a L3901 those switches prevent the starter from cranking.

Something that could allow cranking but not starting is a malfunctioning shutoff relay....

Dan
Yes and no with the tractor moving removing your weight from the seat will cause the engine to shut down.