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Registered
Join Date: Dec 2001
Location: Venice Beach, California
Posts: 838
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993 Air injection ports
How many 993 owners have had to get a valve job because their air injection ports are clogged and the engine warning light comes on?
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Racing Porsche for over 30 years. http://www.OttosVenice.com Check out the Porsche Owners Club Track event Videos |
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10-06-2004, 03:14 PM
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Join Date: Jul 2002
Location: Sydney, Australia
Posts: 517
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Only a small number of OBDII cars have had the secondary air injector ports clogged, but it does get a lot of coverage.
The ports help with startup, pumping oxygen into the exhausts in order to get rid of unburnt fuel. It doesn't affect drivability, but it will mean that you will not pass an emissions test. The central engine light will come on when there is clogging. I have a '95 model with the OBDI system, which are much less sensative at detecting the port clogging than the OBDII system, but not immune. |
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10-06-2004, 03:51 PM
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Join Date: Dec 2001
Location: Venice Beach, California
Posts: 838
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air injectors
I asked this question because today we fixed a 993 with that same problem externally. Anybody want to know about this proceedure, email me or PM me.
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Racing Porsche for over 30 years. http://www.OttosVenice.com Check out the Porsche Owners Club Track event Videos |
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10-06-2004, 04:28 PM
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Join Date: Jan 2001
Location: Iowa
Posts: 1,020
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Sounds interesting. I don't have a 993, but I may someday ... Would you post the answer here?
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John C 1988 911 Carrera coupe 2002 BMW 530 |
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10-06-2004, 05:29 PM
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Join Date: Jan 2001
Location: Lake Forest, CA USA
Posts: 56
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Lots of 993's have secondary air injection problems.. Many 993's need valve jobs because of worn out valve guides. Call me John.
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Laura-Hergesheimer MotorSports |
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10-07-2004, 10:58 AM
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