Interesting. Its worth looking into. I thought that since all my vacuum operated accessories worked fine, the v-pump was fine. When I was cracking my injector lines to see if the noise went away, it did or at least I thought so. Is it possible that when the car was running on one less cylinder at a time it was cancelling the noise in the pump? I'll have to check and see when or if my v-pump was changed. I wonder, how long is the pump supposed to last and is it worth rebuilding?

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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012