Well it's all sorted.
![](./images/smilies/spacer.gif)
Looks like its a result of the tank being left for 6 years.
![](./images/smilies/spacer.gif)
I've white whine vinegar cleaned it.
![](./images/smilies/spacer.gif)
Then clean water.
![](./images/smilies/spacer.gif)
And it's all gone.
![](./images/smilies/spacer.gif)
I've dried it and re filled with petty and installed my aem fuel pump.
![](./images/smilies/spacer.gif)
Which is absolutely silent.
![](./images/smilies/spacer.gif)
.
![](./images/smilies/spacer.gif)
.
![](./images/smilies/spacer.gif)
.
![](./images/smilies/spacer.gif)
Glad I've changed it from the Walbro now.
![](./images/smilies/spacer.gif)