1997 993 Smog

A forum for the 3.6 liter Air-cooled Cars
REJ
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Joined: Fri Mar 27, 2026 4:16 pm
Hello Forum,
I’m helping a freind evaluate what to do with the 97 993. He’s owned it since new, blue convertible roof, light gray. The Interior is close to excellent. Will need tires. It’s been sitting in the garage for the last 4 years.

Problem is it won’t smog. He was told there are some kind of tubes in the engine that get clogged and prior to him parking it he was told it will be harder and harder to pass smog.

Any thoughts on the cost to get it back on the road. What are the tubes that get clogged. I’m a V8 guy, don’t know flat 6’s.

#1

REJ
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Joined: Fri Mar 27, 2026 4:16 pm
The car has 130k miles on it.

#2

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blueline
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Maybe there will be someone in the Carpokes family who has some thoughts on what might be wrong with the emissions systems of your friend's 911. If not, my suggestion would be to take it to a Porsche dealer or other Porsche service specialist and get their advice on what might be needed and how to proceed. An initial best-guess diagnosis or opinion regarding possible causes and cures might be free and if not, possibly not excessively costly.
Tim
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'26 911 Carrera S - PTS Verde British Racing Green
'24 Cayenne S - Algarve Blue Metallic
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'22 911 Turbo S - Carmine Red
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'11 GMC 1500 Quad Cab 4x4 - Black

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Tom
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blueline wrote: Sat Mar 28, 2026 2:54 pm Maybe there will be someone in the Carpokes family who has some thoughts on what might be wrong with the emissions systems of your friend's 911. If not, my suggestion would be to take it to a Porsche dealer or other Porsche service specialist and get their advice on what might be needed and how to proceed. An initial best-guess diagnosis or opinion regarding possible causes and cures might be free and if not, possibly not excessively costly.
I asked CarBot in this thread and think he nailed the answer. :D

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blueline
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Tom wrote: Sat Mar 28, 2026 3:04 pm
blueline wrote: Sat Mar 28, 2026 2:54 pm Maybe there will be someone in the Carpokes family who has some thoughts on what might be wrong with the emissions systems of your friend's 911. If not, my suggestion would be to take it to a Porsche dealer or other Porsche service specialist and get their advice on what might be needed and how to proceed. An initial best-guess diagnosis or opinion regarding possible causes and cures might be free and if not, possibly not excessively costly.
I asked CarBot in this thread and think he nailed the answer. :D
I saw that! More impressive work from Mr C. Bot!! :D
Tim
Current:
'26 911 Carrera S - PTS Verde British Racing Green
'24 Cayenne S - Algarve Blue Metallic
'21 718 Cayman GTS - Black
'22 911 Turbo S - Carmine Red
'21 718 Cayman GT4 - White
'11 GMC 1500 Quad Cab 4x4 - Black

Musik-Stadt Region

#5

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