How can I protect my fuel pump from corrosion? I've got a 1994 1.9 Gti which is a LOOOOooooNG term project. I'm on about my 4th fuel pump. Every time I buy and install a new one, then sadly don't progress anything for a while, the fuel pump either fails (which is why it's the first thing I check) or I take it out, and it's COVERED in corrosion. Tried painting it with Hammerite then left it in petrol overnight, EVERYTHING had peeled off. Has anyone else seen this problem? Why don't they coat fuel pumps with something which is corrosion resistant? Why does SO MUCH corrosion occur inside a dry-stored fuel tank??? Suggestions welcomed :-)