Thread: Let's Talk California Smog
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rjm65 rjm65 is offline
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Join Date: Feb 2008
Location: El Cajon CA
Posts: 480
The diverter valve would only cause the car to stumble if it had a vacuum leak.

Whether the smog pump is pumping air into the exhaust or diverting it out, it shouldn't cause a stumble.
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Raymond
1979 928 5 spd
Old 08-24-2011, 12:01 PM
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