• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Fuel Pump Leak

Share this page

DNK

DNK

Great Pumpkin
Country flag
Offline
Looked back a ways, but didn't see the post of someone fixing a fuel pump leak. I think Randall had the fix
 
Where's the leak , Don ? I can think of 4 possible places, the top, the fuel lines, or the diaphram.
 
Not mine, wanted to know for another person who installed a new Moss pump and it leaks at the connection
 
I have to get mine wicked tight else they leak (perhaps I have that newer version of the compression fitting). In any case -- a flare nut wrench is useful as that nut is soft brass and a regular open-end wrench may want to round it.
 
Maybe a second question, Has anyone bought a pump from Moss lately for the TR6?
 
The article TR3Driver posted is what fixed my fuel pump leaks. In addition to new ferrules, I purchased new brass fittings from a local NAPA auto parts store. I re-used the old lines themselves. Everything sealed up nicely and no more scary fuel leaks.
 
A guy on another forum bought one from Moss and it leaked and the nut wouldn't seal right. Bought 5/16 line and ferrule and nut and it sealed.
Why is Moss selling a 5/16 pump or is this a one of thing.
 
The original pump was designed for 5/16 lines (and the special ferrules), Triumph used a special nut to adapt 1/4 line on the output. Actually it's not all that special, the 5/16->1/4 nut used to be a standard hardware item (I found one at my FLAPS, many years ago).

One of my first lathe projects was turning a nut with a tip long enough to use a standard ferrule. It's still on there (moved over from the wrecked car).
 
Well Bob's your uncle.
I have completely forgotten that.
I don't have the filter side of the pump any more but still had the back side .
Measured it and saw it was 1/4. So expected both sides that way.
 
Back
Top