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#1 SU el electronic faulty

Posted: Wed Feb 12, 2025 12:27 pm
by phoenix
Hi I have a new {but cant return} AZX1308 electronic fuel pump not working. It makes the usual noise but does not pump .It is on the bench using a good battery. It is 2 years old now so cannot return it. I can take apart but before I do any advice . Thanks

#2 Re: SU el electronic faulty

Posted: Wed Feb 12, 2025 2:49 pm
by phoenix
I have now stripped it and found the three diaphragm intact.

#3 Re: SU el electronic faulty

Posted: Fri Feb 21, 2025 8:34 pm
by caveman
Hi Bryan,
See Mareks excellent reply (#6) in following link, it may help understand the technical side of operation:
viewtopic.php?f=3&t=19817

I've had 2 new Electronic SU pumps fail in quick time, one straight out of the box would tick but pressure was poor. Mine were replaced under warranty, thankfully.

#4 Re: SU el electronic faulty

Posted: Wed Feb 26, 2025 3:12 pm
by phoenix
I am reluctant to buy another SU pump after this on failed virtually out of the box what is the best alternative.

#5 Re: SU el electronic faulty

Posted: Wed Feb 26, 2025 5:59 pm
by caveman
I have a third (and final) electronic SU pump fitted this winter, courtesy of SNGB. I'm hoping this one provides longevity. I carry a Facet as a spare, that has been faultless previously, and I also have a HARDI pump, thats a German SU equivalent, so I'm led to believe. I also have a fuel regulator than ensures no matter what pump is fitted, I maintain uniform pressure (2psi).
I'd be interested to hear what others carry as part of their spares in the boot etc? A second £££ SU maybe?

#6 Re: SU el electronic faulty

Posted: Wed Feb 26, 2025 10:35 pm
by Tommd
phoenix wrote:
Wed Feb 26, 2025 3:12 pm
I am reluctant to buy another SU pump after this on failed virtually out of the box what is the best alternative.
I have had good luck with the original pump.
Tom