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Old 01-12-2001, 11:41 AM
gs sparhawk gs sparhawk is offline
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Join Date: Dec 2000
Location: South Dakota
Posts: 310
I have the 1975 280 sedan. It has a diapragm vacuum pump driven off the RH cam on the front of the engine. It is a boost for the brakes and the rest of the system. Funny, though, after replacement, I drove it hard and still puffs smoke on slowing. Could be some residual oil still in there somewhere. We'll see. I was hoping it wasn't valve guides.
No shame in not knowing every model, Larry. Too many versions-too many models. And, I thought I had a handle on the various quirks of automobile behavior. But, my connection in Salt Lake City keeps me amazed at the variations of problems and solutions. Best Wishes, Steve
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