I have a 94 ducato hymer motorhome. We have constant problems with fuel as the is a fuel filter near or in the fuel tank which blocks. There also appears to be a prob with older moldels were mould grows in fuel tank thus bloking filter. Anyone any ideas without haveing to get a new tank. Also have problem with starting batery is fully charged but wont start at times any previous had earth prob which gave similar results could this be prob. Reading some other posting could be starter motor any ideas suggestions welcome