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metr0p0lis1927's Avatar
 
Join Date: May 2012
Location: Northeast Tennessee
Posts: 36
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Pressure Damper problem??

while replacing cracked vacuum hoses in my engine bay I pulled the vac line off the fuel pressure damper and when I did, I noticed it was wet , not the damper itself , the vacuum hose. As in it was wet with gasoline, so I blew it out (the damper which was apparently full) and reattached the hose and started the car for a few minutes, then shut it off and checked the damper again which was once again full of fuel .

my questions are :
1) is this normal?
2) if not , does this mean that the internal diaphragm is shot and I need to replace the damper ?
3) is this dangerous?
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1984 928S either Metallic Pewter or Quartz Gray
Old 06-24-2012, 10:03 PM
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1. no
2. yes
3. possibly, you will suffer performance wise as well as emissions.
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84' 928 S with Euro Mods - Quartz Gray Metallic (Quite the project!)
Old 06-24-2012, 10:23 PM
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Sounds like a bad damper diaphragm to me, but the best way to test itis to use a hand operated vacuum pump and attach it to the damper. If it holds a vacuum it should be okay, nut if the vacuum bleeds off, it's time for a new one.
Old 06-25-2012, 05:41 PM
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Old 06-25-2012, 05:41 PM
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