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Old 01-31-2018, 05:11 PM   #44
Boxstard
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Join Date: Apr 2016
Location: SE Michigan
Posts: 497
Quote:
Originally Posted by boxfix View Post
I had a bad vacuum reservoir they are only 20.00 or so. easy to test with a hand vacuum pump. They make these in 2 pieces and glue it together. It should be roto molded. You can buy metal ones from Summit Racing.

The solenoid valves are the same in many German cars.
Reservoir was my initial suspect, read it is a typical failure mode, but mine was fine.

After all my changeover valve was shot, inside diaphragm was totally deteriorated, same with the check valve, rubber diaphragm was gooey.

Yes, the solenoid valve is commonly available, made by Pierburg. I bought the same one cheap to rig up actuation of my PSE valves.
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