2nd Generation Specific 1986-1992 Discussion

S5 6 port actuators

Old 12-08-2016, 03:25 AM
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Default S5 6 port actuators

In the process of fixing the fuel leak, I replaced all of vacuum lines also in this process. The car pulls well till about 5k. Then it just revs and seems to fall on its face. So I tested the actuators. I pulled the vacuum lines off and used air to try and make the actuators move. I know it only should take like 6~psi to open. It took almost all pressure from my air compressor to open them. Then stuck open. Took the vacuum diaphragm off and it operates fine with air. The part the vacuum diaphragm attaches was real hard to rotate back down. I believe my 6port valve thing(not sure exactly what it's called) is gummed up. Is this super common?
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