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Old 01-26-2018, 03:40 PM   #1
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Originally Posted by Oldcarguy View Post
After replacing my ver.00 AOS with a new Porsche Genuine AOS ver.01 I was disappointed to find that the new AOS was still reading between 6.21 and 7.28 WC. Pretty much what the old one was reading. Here’s my original thread:

If it ain’t broke, don’t fix it??

Not trusting my $35 manometer, I ordered a Fieldpiece manometer. With the Fieldpiece my new AOS is reading in the high fives cold and 5.32 - 5.41 warm. The cheap manometer is off by ~1WC



JPF indicated that anything above 5.0 warm is candidate for replacement. The Pelican article says 4-7 is ok. I think I’m going to call it good at 5.32, watching for symptoms and monitoring WC regularly. I really don’t want to go back in and risk breaking the AOS plastic squeeze clamps unless I really need to.

What do you guys think???


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4-7 is OK on a cold start, but 5 is our limit warmed up. Yours is marginal, so I would leave it alone, but check it regularly to see if starts going up.

Nice manometer by-the-by.....
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Last edited by JFP in PA; 01-26-2018 at 03:42 PM.
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Old 01-26-2018, 03:54 PM   #2
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Quote:
Originally Posted by JFP in PA View Post
4-7 is OK on a cold start, but 5 is our limit warmed up. Yours is marginal, so I would leave it alone, but check it regularly to see if starts going up.

Nice manometer by-the-by.....
Hi JFP, thanks for the quick response. Good news! I’ll leave it and monitor. At least I’m within spec for the cold start and now I have the latest version.

The Fieldpiece is awesome, thanks. I know better than to try and cheap out on important equipment but I slip sometimes.
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