Thread: 126 (87 SDL) should vac pump itself hold vac?
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Old 08-01-2002, 02:37 PM
lrg lrg is offline
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Join Date: Jul 2001
Location: San Francisco
Posts: 1,163
On my 603 engine there are check valves on both vacuum lines coming out of the pump. My guess is that they are there because the pump does not always hold a vacuum.
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1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold
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