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Technically Speaking => Fuelling => Topic started by: Eric GSX1400K3 on Monday, 31 January 2022, 09:35 PM

Title: Noisy EFI pump
Post by: Eric GSX1400K3 on Monday, 31 January 2022, 09:35 PM
Hi everyone, thought I'd ask the collective brains trust here.

I replaced the original efi pump in my K3 with a Quantum EFI pump.  Bike runs fine, but I've noticed that the fuel pump is decidedly louder than the original, running with a high pitched whine.  Primes fine when I turn the ignition, bike starts first press of the button and runs fine, idles well and revs clean all the way to redline.

Any ideas?
Title: Re: Noisy EFI pump
Post by: Hooli on Monday, 31 January 2022, 09:53 PM
My experience is pumps get noisy when the teabag is dirty. It happens long before running issues.
Title: Re: Noisy EFI pump
Post by: Eric GSX1400K3 on Monday, 31 January 2022, 11:52 PM
Cheers, thanks Hooli, will check the teabag
Title: Re: Noisy EFI pump
Post by: mlivkovich on Tuesday, 01 February 2022, 02:35 AM
I run 40€ ebay pump for the last 3 years, it is louder than oem pump from the first day but bike runs fine.
Title: Re: Noisy EFI pump
Post by: T 24 on Tuesday, 01 February 2022, 04:55 PM
e.g. Walbro and Holley pumps are much louder than Bosch or Mitsubishi pumps. I don't know why, but they are  :whatever:
Title: Re: Noisy EFI pump
Post by: grog on Tuesday, 01 February 2022, 07:05 PM
Agree T24. AC Delco maybe loudest. No idea why, Holley-chinese, Mits either Korea or Japan, Walbro USA. AC chinese. OEM, japan. Tridon were Canada, not sure now. Company i worked for in Sydney, sold Tridon as OEM, Nissan, Toyota, Volvo, Ford, even Jaguar. Were imported total cost $14, re packed, prices ranged grom $100 to just on a thou. Same pump. Different boxes only. Dont ever think OEM is real.
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