Smog pump

89roadster

Founding Member
Apr 19, 1999
1,124
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Kent Island, MD
Trying to get rid of the 94/44 codes.

The diverter valves work (tested with a vacuum and can switch the outputs), the switches work (watched the vacuum gauge pull a vacuum on and off during the test phase), the tubing is good, and the smog pump is pumping air, but I could plug the tube with my thumb - does this mean that the pump is too weak?