Thread: VACUUM PUMP FAILURE! Are you neglecting yours??
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  #86  
Old 06-23-2012, 07:22 PM
qwerty qwerty is offline
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Quote:
Originally Posted by Diesel911 View Post
Isn't there also Crankcase Pressure on the Engine side of the Vacuum Pump Piston?
On the piston pump, there is (effectively) crankcase pressure on both sides of the piston.
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