I put in a new vac pump 18 months ago, so I doubt that is the trouble, but I will start with checking it.
I did not have any oil pressure or loss issues, but I will check the oil level too. thanks for the suggestions. -Andy

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andy t
'78 300d
'95 volvo 850, wagon
'86 300sdl - engine out, maybe I'll have it rolling by June

whole bunch o' bicycles