Thanks for your thoughts all
Regulator is built in Thanks Geeves relised that it would have been the old seperate regulator ones we used to do that on.
Got the old one out tonight and it didnt look pretty -full of rubbish and wouldnt turn by hand very easily. Ive found a reconned one at the wrecker. Customer had his rebuilt (by auto electrician in New Plymouth -got the reciepts still in glove box) and wrote off his wagon the next day. I didnt think that $170 was too bad (he says hopefully
) Also found the exhaust leak the exhaust gasket is had it and managed to burn myself on the headers undoing the studs. For those who are wondering why I loosened the nuts while hot it reduces the chance of snapping the studs