More Fuel Tank repairs

I *think* have now decarbonised the inside of the fuel tank, certainly an awful lot of scale and rubbish washed out after repeated flushes with an industrial de-greaser. Next rust removal – the hard part… well it is inside the tank…

Hydrochloric acid is my chemical of choice, otherwise known as muriatic acid or stomach acid. Now I was not prepared to be repeatedly sick into the fuel entry pipe so a less dramatic approach was required. A trip to the local DIY store to pick up some concrete cleaner. Yup, good old concrete cleaner is hydrochloric acid. Pretty smelly stuff it is too and it steams like dry ice. Best to wear a face mask for this then. Diluting it to 20% with water was the plan which meant i could obtain quite a lot of the acid and could afford to refresh it frequently. Tip in a couple of pints and swoosh it about. Leave for 10 minutes and swoosh it about again and then do it again. Pour it out and mix up a new batch. After the second set of swooshings i noticed a puddle on the floor. Forehead wrinkled I examined the tank. The liquid was escaping through tiny pin holes and around a few of the seams.

So it appears that the tank was holding water by virtue of a thin layer of rust only! lots of leaks are not the best thing to find in a fuel tank. Well isn’t it lucky that I have a tin of fuel tank sealer that will go in as the next step then…

Next step thoroughly drying out the inside of the tank… a hot air stripper on low should do it…. ah the tank gets pretty hot doing that… umm… compressed air then… Oh pants what a fine time for the air compressor to spring a leak (a job for another day). Aha I know… I will consult m’lady  to borrow a hair dryer… hmm that doesn’t seem to be an option either. Ebay then for a cheap hair dryer. Now on order for a few pennies.

 

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