Kubota KX121 fuel pump noise

   / Kubota KX121 fuel pump noise #1  

biodegraded

Silver Member
Joined
Jun 26, 2014
Messages
123
Location
Lane County Oregon
Tractor
MF 1754
My Kubota mini-ex fuel pump started making a ticking noise. It does not affect engine operation that I can tell. I've run it a few hours since. I am wondering if any here have experience with this sound. Will it fail soon or can it go on like this indefinitely? Short video clip linked. Advise welcome.
YouTube
 
   / Kubota KX121 fuel pump noise #2  
My Kubota mini-ex fuel pump started making a ticking noise. It does not affect engine operation that I can tell. I've run it a few hours since. I am wondering if any here have experience with this sound. Will it fail soon or can it go on like this indefinitely? Short video clip linked. Advise welcome.
YouTube

This video is not available.
 
   / Kubota KX121 fuel pump noise
  • Thread Starter
#3  
Thank you for the heads up. For whatever reason it was private. I have made it public. It should be visible.
 
   / Kubota KX121 fuel pump noise
  • Thread Starter
#4  
I finally figured out how to make the video public. If anyone still has interest in this thread.
 
   / Kubota KX121 fuel pump noise #5  
One common cause for noisy electric transfer pumps is a restriction in the tank outlet or somewhere between the tank and pump.
 
   / Kubota KX121 fuel pump noise #6  
Have you replaced the filters and made sure they are clear and free flowing?
 
   / Kubota KX121 fuel pump noise
  • Thread Starter
#7  
@RickB - I will check out the line between the tank and pump.
@Code54 - The fuel filter is only 6 months old and not that many hours. But it would not hurt to just replace it as cheap insurance.
Thanks to both for your replies.
 
   / Kubota KX121 fuel pump noise #8  
One common cause for noisy electric transfer pumps is a restriction in the tank outlet or somewhere between the tank and pump.
I agree, usually it's a fuel starvation problem when they get loud.
 
   / Kubota KX121 fuel pump noise #9  
check the tank, if its cavitated it could be full of small air bubbles, this will cause a noisy pump
 
   / Kubota KX121 fuel pump noise #10  
My 121-2S sounds exactly like that, with the key on and engine off.
 

Tractor & Equipment Auctions

2020 Kubota Z723KH 48in. Zero Turn Commercial Mower (A50322)
2020 Kubota Z723KH...
https://www.globenewswire.com/news-release/2025/05/08/3077245/0/en/Nerve-Calm-Complaints-Investigated-2025-User-Reviews-Tested-Verified.html
https://www.globene...
2013 Cadillac ATS Sedan (A50324)
2013 Cadillac ATS...
2012 STEPHENS 220BBL CRUDE OIL TRAILER (A50854)
2012 STEPHENS...
2006 Ford F-550 4x4 Flatbed Pickup Truck (A50323)
2006 Ford F-550...
White 2-55 Loader Tractor (A50514)
White 2-55 Loader...
 
Top