hi Andy,,

re your turbo bits,,

do a search for turbotechnics or similar...

many of em do an online liagnostic table gives a list of faults and symptoms.... and cures!!!

if its not holding pressure... try checking your turbo hoses for leaks another one is the dump valve if its a recurculating one

the diaphram can go...and crappy idling can be the result..

mart

rear diff now done.....coolant next

M