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  #1  
Old 11-12-2015, 11:57 AM
cornemuse's Avatar
red herring
 
Join Date: Sep 2012
Location: San Diego north county
Posts: 600
"Vacuum Resovior" Leak

I've been having sporadic vacuum issues for a year or so. Finally reached the point that if I let the car idle for 30 seconds or more, it did not have enough vacuum to shut off. ('83 300 CD turbo). I have found & fixed quite a few problems up to now. Finally traced things to the vacuum res. connection. I thought I was going to break something trying to pull the vacuum line out of the rez. I plugged the line to the res, and then even w/o the res, the system held a vac. on the (mightyvac) gauge for 20 minutes before vac started dropping. As the res is plastic, the 'plug' going in the res is rubber, and the line/tube is plastic, would a new plug really resolve the issue? Once I removed the vac tube, it then slid in with I think way too much ease, slid right in.

I have removed to the garage the res & have siliconed (I mean really slathered on the goo!) a long piece of vac tube into the plug into the res. I will put a loop of vav tube behind the trunk carpeting to the existing vac line to the res. Is this going to work? I junked out a 300 D & noticed the same tube to res had silicone slathered around on it also, is this a reoccuring (or recuring) issue here?

I let the silicone cure overnight, puttin' it back togethrer today.

-corne-
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Old 11-14-2015, 11:57 AM
cornemuse's Avatar
red herring
 
Join Date: Sep 2012
Location: San Diego north county
Posts: 600
Nobody??
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  #3  
Old 11-14-2015, 05:37 PM
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Join Date: Jan 2012
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I don't see any issue with the fix since it is vac not pressure. You may have a vacuum pump starting to fail or other leaks as I'd expect things to work at idle. The tank should be for engine off actuation of door locks is you have them.
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