the pump is less than a year old. there is a lot of pressure in the system as when i take off the fuel cap i get loads of pressure coming out. if that makes sense
another thing i have noticed is that i have a red plug with a red relay in it. and the relay is knackered as its all coroded. coz its a mk5 with a rs lump in i dont know what this relay is al i know its part to do with the loom.
where is the oneway valve is it on the metering unit?