Re: Way off the marque...again
1. Are the fuel filters clogged up with sediment? If so maybe removing the tank emptying it and coating it with slosh sealant might cure it permanently.
2. If filter has no sediment then maybe the flexible fuel lines are gradually collapsing as tank pressure builds up, changing the filter would release the pressure. I had this problem some time a go and went through the process of fuel filters, pump and all sorts before finally finding the problem.
Its illegal to have an obscured numberplate, handy for avoiding spped cameras but the travelling jam sandwiches will nick you.