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Fuel Pump Leak
Posted: Mon Apr 03, 2023 8:58 am
by 1lowcountry
Hey y'all,
Are fuel pumps serviceable? I've got fuel slowly seeping out from around the top of the cap at the bottom of the pump (if that makes any sense). Is there a seal inside that can be replaced?
Thanks...
Re: Fuel Pump Leak
Posted: Mon Apr 03, 2023 9:48 am
by Herb
I don't remember anyone posting about a sucessfully servicing a leaking fuel pump.
Re: Fuel Pump Leak
Posted: Mon Apr 03, 2023 2:21 pm
by hillsy v2
I pulled one apart a while back - they seal by the crimps on one half of the body (refer 2nd pic) so getting them back together without leaks would be pretty hard.
You can get rebuild kits for some but these are just the electronic points - short answer is no, not rebuildable.
Re: Fuel Pump Leak
Posted: Tue Apr 04, 2023 5:27 pm
by 1lowcountry
So yeah, it seems like the crimps are the only things sealing the unit... and that's where the leak was coming from.
Needless to say, I went ahead and wrapped the area with teflon before putting it back together and crimping it... no leaks so far.
Not sure how long this will hold, but it's good to know at least that it can be done.
Thanks for the advice
Re: Fuel Pump Leak
Posted: Tue Apr 04, 2023 6:02 pm
by Herb
So, we now know that they can be repaired.
Thanks for letting us know what you found.
Re: Fuel Pump Leak
Posted: Wed Apr 05, 2023 1:04 am
by hillsy v2
1lowcountry wrote: ↑Tue Apr 04, 2023 5:27 pm
So yeah, it seems like the crimps are the only things sealing the unit... and that's where the leak was coming from.
Needless to say, I went ahead and wrapped the area with teflon before putting it back together and crimping it... no leaks so far.
Not sure how long this will hold, but it's good to know at least that it can be done.
Thanks for the advice
I'd be wary of a "patch" fix on these things - you might still get fuel leaking into the area where the points are - they spark in normal operation.
Re: Fuel Pump Leak
Posted: Wed Apr 05, 2023 8:49 pm
by 1lowcountry
Y'all were right... I was wrong... thing started leaking the next day. So new fuel pump it is.
I don't think sparking at the points is an issue because it was just seeping out at the bottom around the crimps so it's not like the gas was getting closer to the points.
Thanks again.
Re: Fuel Pump Leak
Posted: Wed Apr 05, 2023 10:21 pm
by hillsy v2
1lowcountry wrote: ↑Wed Apr 05, 2023 8:49 pm
Y'all were right... I was wrong... thing started leaking the next day. So new fuel pump it is.
I don't think sparking at the points is an issue because it was just seeping out at the bottom around the crimps so it's not like the gas was getting closer to the points.
Thanks again.
Good call - last thing you want is a fire starting while you are out riding - just ask Colin how that feels.......
Re: Fuel Pump Leak
Posted: Wed Apr 05, 2023 11:08 pm
by Lechy
I fitted one of these, US$ 30 made in Taiwan. Suited to small Mitsu's and Nissans, all I had to do was to cut off the mounting eyes then it fit perfectly. No problems in 3 years,
Re: Fuel Pump Leak
Posted: Mon Jul 10, 2023 9:27 am
by mikebet45
Just be sure you don't replace the pump with a fuel injection type. That 40-60 psi will have gas spraying everywhere. Hmmm...I may have stumbled onto the premise of a sabotage murder mystery plot. Hollywood here I come!