Petrol tank again !!!!

[Woody2000]

Hi have got my car running after many many years of not working have problems with the petrol supply took the tank out used Bilt Harmer tank kit cleaned it reinstalled it and kept blocking from the tank have taken it out again put some petrol in it shook it and more what looks like dried fuel came out  black bits that crumble in your fingers 

Now I’m not sure whether to try it again and see what happens ???  or jet wash the inside  as best as I can ???

Driving me round the bend as not sure when it’s gonna happen again middle of a country road or on the duel carriage way !!!!!!!!

thanks Mark 

[Pete Lewis]

dont know what to suggest   this is mk2 saloon so its the vertical tank behind the rear seats ????

a pressure wash is worth a try , but black bits ??? where are they from ,

how long ago did you resurface the insides ???

Pete

[Paul H]

I used the Frosts kit which adds a resin skin to the tank filling any perforations . These kits are like marmite . In my case following the instructions to the letter the kit has worked . I even had enough to complete a refurb spare tank I had acquired 

Paul

 

[Woody2000]

Yes it’s a vertical tank the black bits when they crumble they are brown probably old petrol .The kit just cleaned it it doesn’t line it 

 

 

 

[Woody2000]

Don’t think the loose stuff is rust is ole dried out petrol 

[Pete Lewis]

just to test  check it with a magnet  rust is  still magnetic 

Ive never seem old fuel deposits  so cant help with that 

if you look through the sender unit hole can you spot anything...how much is there ??

Pete

 

[Woody2000]

Just put a magnet in it very very small amount on the magnet 

[Woody2000]

Just now, Woody2000 said:

Just put a magnet in it very very small amount on the magnet 

 

[Woody2000]

No very easy to take photo of !!

[PeteH]

Can you beg, borrow, steal? an endoscope for a good look?. These are cheap and cheerfull and work on I-Phone or Android?.  https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=Endoscopes&_sacat=0&LH_TitleDesc=0&gclid=EAIaIQobChMItbab-4Xl7wIVEO7tCh2OBgNtEAAYASAAEgIT4_D_BwE&matchtype=e&adgroupid=105371476512&geo_id=32251&MT_ID=584406&cmpgn=10630714027&crlp=450949374169_&keyword=ybai&rlsatarget=kwd-329221437525&abcId=1140046&loc=9046251&sitelnk=&norover=1&mkrid=710-154084-937780-5&network=g&poi=&mkevt=1&adpos=&mktype=&_odkw=Ybai&device=c&mkcid=2

Pete

[Woody2000]

Just taken picture of the loose bits had a quick look in the tank might be some more in there 

could I use a degreaser and boiling water to clean it out maybe ??

[Mathew]

Was it running on coal?

[Pete Lewis]

crikey thats a right mess   , cant see thats any residue form fueling  

+1 for the coal idea 

looks like some sort of bitumen product 

like something nasty has been put in the tank

Pete

[Woody2000]

It crumbles very easily on your fingers shine my iPhone torch in the filler neck looks quite clean maybe some left in the bottom was going to try water based degreaser  and boiling water and leave it to soak ??

[Paul H]

Use some gravel and agitate 

Paul

[JohnD]

Detergents and degreasers unlikley to shift that lot!

I would say the standard advice as for an enema, High, Hot and a Hell of a lot!

A pressure washer into the filler  tube, when the tank is upside down might was most of it out.

John

[Woody2000]

Ok will give it a go 

[PeteH]

I have used Dishwasher Tab`s and boiling water with some success in the past on similarly "crusty" surfaces. That and the power washer??.

Peter

[Woody2000]

I’ll try tomorrow suppose you leave the tablets and boiling water in there for a few hours then jet wash it ??

how many tablets do you put in ??  Thanks Peter 

[PeteH]

3 minutes ago, Woody2000 said:

I’ll try tomorrow suppose you leave the tablets and boiling water in there for a few hours then jet wash it ??

how many tablets do you put in ??  Thanks Peter 

Hard to say in a 10Gall? tank. you could try 3 of 4. lots of boiling water and agitate. It certainly "moved" the crud in the Clutch Master Cyl; in my most recent usage. And that was baked on! to the point petrol would not shift it!.

I think I`m lucky, The 13/60 fuel tank looks reasonably New and sound!.

Pete

[Woody2000]

Thanks again will try Pete

[Nick Jones]

Impressively crusty!😮

Caustic soda (sodium hydroxide) available as powder for drain cleaning is very effective against fossilised hydrocarbons but won’t eat the steel tank. It might eat solder/braze and definitely will eat aluminium though. It’s what I used to clean my PI saloon tank and GT6 tank.

Nick

[Colin Lindsay]

22 hours ago, Woody2000 said:

Just taken picture of the loose bits had a quick look in the tank might be some more in there 

could I use a degreaser and boiling water to clean it out maybe ??

Looks like someone's cannabis stash....

[Nigel Clark]

3 hours ago, Nick Jones said:

Impressively crusty!😮

Caustic soda (sodium hydroxide) available as powder for drain cleaning is very effective against fossilised hydrocarbons but won’t eat the steel tank. It might eat solder/braze and definitely will eat aluminium though. It’s what I used to clean my PI saloon tank and GT6 tank.

Nick

Safety warning: caustic soda is highly corrosive to human tissue. If you try using it, wear goggles and chemical resistant gloves or better still gauntlets. Any splashes must be washed immediately with lots of water. If it gets in your eyes, irrigate with lots of water and go straight to A&E.

Nigel

[Nick Jones]

Indeed..... it does say all that on the container....

Also always add powder to water, not water to powder and start with cold water, it will get plenty hot on its own.

Nick