Fuel Seepage

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Bonwit

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I recently replaced the fuel lines on my '74 Commando, but unfortunately, I'm now seeing some seepage which I believe to be coming from one of the banjo fittings at the carburetor. I did not see a gasket here, and assume that the nylon fuel filter basket serves that purpose. I reused those filters, and perhaps the plastic has become hardened over time. Can someone confirm that there is no other gasket here? Does anyone have a good source for these filters? I'm also looking for a source for the paper gaskets for the fuel drain plugs.

Thanks!
 
Bonwit said:
Can someone confirm that there is no other gasket here?
Click to expand...

That is correct although there is often a fibre washer of the correct size in the gasket kit but that is for alcohol fuel where a metal gauze filter is used instead of the nylon filter.
If the banjos are metal then the bolt should have a fibre washer.
amalcarb.co.uk

Notes On Rebuilding the Amal Mark 1 Concentric Carburetter | AMAL | AMAL Carburetters

The Notes On Rebuilding the Amal Mark 1 Concentric Carburetter page for the AMAL Carburetters website.
amalcarb.co.uk amalcarb.co.uk
Fuel Seepage
 
The plastic filters get a set on the flange on the banjo as they age, I keep a pair of new ones on the shelf it the banjo starts weeping.
 
Awesome! Thanks for all the help guys - and the photo, L.A.B. So, it looks like the missing washer on the bolt is my problem. Checking Ebay, I'm finding replacements, but the prices and/or shipping is absolutely crazy. I think I'll start with a trip to the hardware store. Making the drain plug washers out of leather is a great idea as well. Since I'm often draining my bowls while storing the bike, these fiber washers don't last long.

John
 
One of the best additions to my tool box was a set of punches and a 1 ton arbor press. They make making gaskets fun.

Slick
 
I had a fuel leak from what turned out to be the banjo bolt corroding after years of storage. I used Hylomar sealant which is "petrol resistant" (many /most sealants aren't) as a temporary expedient but am leaving it as - is at the moment just to see how well it lasts. Been on their for over a month and perfectly dry so far.
 
wavey_davey said:
I had a fuel leak from what turned out to be the banjo bolt corroding after years of storage. I used Hylomar sealant which is "petrol resistant" (many /most sealants aren't) as a temporary expedient but am leaving it as - is at the moment just to see how well it lasts. Been on their for over a month and perfectly dry so far.
Click to expand...
Love Hylomar. Eat it for breakfast. Gas resistant. Feeling a little constipated though lately.
 
I have full kits of copper and fiber washers of different sizes, I also have tools for making my own gaskets when needed to make them in emergencies as well the patients to make them, every workshop should have them, but a lot of carb gaskets are hard to make so when I do replace gaskets I buy extra for spares but carb gasket last a long time and are reuseable if not over tighten, after 45 years of owning my Norton I have every tools that I need to work on all my bikes and a well set up workshop, I am self taught from day one of owning all my bikes and is the best way to get to know your bikes.

Ashley
 
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