I have had not much luck cleaning the inside of my fuel tanks .the petrol was in them for years I think it turns into shellac. Does not appear to be any rust in the tank. P767676

Tried soaking in white vinegar?

Put some fine gravel in there, then shake, baby, shake.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

I used white vinegar and let it soak for a while to loosen it up then put a few handfuls of gravel in there. Seems to do a good job as far as I can see

I did the one in my Traveller with Koala Kare degreaser, and a bunch of nuts threaded together on a string, with lots of shaking. That took out the small amount of varnish from dead fuel, then I de-rusted it with citric acid. It looked like new when it was finished.

Tim

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1951 Morris Commercial J Type Van
1955 BSA C11G
1961 Morris Mini Traveller
1969 Triumph TR6R
1977 Leyland Moke Californian

POR 15 tank repair kit...I did both my tanks with this
http://www.ppcco.com.au/por19.html

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Jenk.

I used CLR in a tank that I had to clean not to long ago and it worked wonders.