TwinTurbo.NET: Nissan 300ZX forum - Questionable
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Subject Questionable
     
Posted by Metacom on August 26, 2020 at 8:52 PM
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In Reply To Re: Calling all experts... car idles rough, hesitates/stumbles posted by theo.laz on August 26, 2020 at 02:53 PM
     
Message Lets check your readings again with another vacuum gauge, meanwhile resolve your CAS code and see if that resolves the problem,

https://www.300zx-twinturbo.com/cgi-bin/manual.cgi?list=ef&slide=107

Here is the vacuum test from my 94TT, pardon the intermittent poor camera work and language...burned my finger :(

https://1drv.ms/v/s!Aujsaw6oKjtRjFnZZkbbYTtVP8jM?e=MiyT23

See the difference?

Your readings, provided the gauge is being accurate, would lend to a possible valve or ignition timing issue that would line up with a CAS trouble code.

     
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