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Progress report
I was back in the engine compartment a couple of days ago and found the check valve that plugs into the rubber inlet manifold was not very tight, no barbs on it to hold things in place. I had found this one disconnected a week ago and it is the main vacuum source.
I bought some barbed 3/16 brass fittings and and inserted that into the hole and used high temp silicon tubing to connect it to the "Y" fitting. Also put in a barbed fitting going into the "Y". I plan to work my way through the vacuum lines and put in these better materials in place of the rubber that is deteriorating.
high quality silicon tubing is so much better than the rubber that Porsche used.
No SAI codes for a day or so, so I am going to run the route and try to get in for a smog test today or tomorrow.
Last edited by boxfix; 09-08-2017 at 07:10 AM.
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