i have a sticking fuel pump is there anything i can put in the tank to keep it free?

Not come across a sticking fuel pump, at least not one that's bathed in light lubricant.

Are you sure it's not worn out? Or has faulty wiring.

What's the symptoms?

when it stops all i have to reach underneath give it a bang and of we go again but someone is buying it in a couple of days

pyscokiller said:

when it stops all i have to reach underneath give it a bang and of we go again but someone is buying it in a couple of days

Click to expand...

Will you be letting them know of the fault or do they know already?

pyscokiller said:

when it stops all i have to reach underneath give it a bang and of we go again but someone is buying it in a couple of days

Click to expand...

It's possible it's a damaged wire in the pump harness assembly, which is a known issue on early FL2s.

Just for information. According to the sale of good act, you'll need to tell the purchaser that the fault exists, as you know about it, and have posted it's existence on a public forum.
The purchaser could demand their money back, and any additional expenses if you don't tell them in advance. They're also within their rights to take you to court over the matter, which will add more costs than simply fixing the fault correctly in the first place.

When I sold mine, I replaced rebuilt the top end of the engine for the next owner, so I knew there would be no comebacks. The new owner is now happy with his purchase, which is the way it should be.