Subject	You need to check vacuum signal with a simple vacuum gage>>
Posted by	ZUL8TR on December 11, 2020 at 9:08 AM
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In Reply To	whats the correct vacuum at idle for a tt? posted by slcZ32 on December 10, 2020 at 05:43 PM
Message	This will tell of any issues that relate to your problem. Note the needle movement if all OK it will be a very steady (no vibs) reading at a high reading. Although the link is for a 280z the info is for your case as far as gage interpertations and explainations given. I do not know what the 300zx TT idle vacuum is for a healthy engine but guess at in the range of a steady 19 - 20" Hg. [ http://www.atlanticz.ca/zclub/techtips/vacuum/ ] I have a vacuum gage in my tool supply for over 50 years very handy for old school diagnosis. FYI my 92 300zx NA idles at a steady 21"Hg with 94k on the ODO. Report you results ZUL8TR
Follow Ups	whats the correct vacuum at idle for a tt? - slcZ32 17:43:06 12/10/20 You need to check vacuum signal with a simple vacuum gage>> - ZUL8TR 09:08:37 12/11/20 Depends on your elevation too, 2200ft can drop a couple "Hg - itsa300zx 09:58:22 12/11/20 Good point, living at sea level I forgot that ;-) >>>>>> - ZUL8TR 13:44:24 12/11/20 I thought I remember reading normal is about 18 to 20 Hg. - JULIAN 22:48:12 12/11/20 Re: I thought I remember reading normal is about 18 to 20 Hg. - slcZ32 00:15:51 12/13/20 You more than likely have a vacuum leak >>>>>>> - JULIAN 07:40:20 12/14/20 Please watch this video and tell me if my ECU is fried. - slcZ32 00:21:13 12/13/20 Have you tried >>>> - JULIAN 13:03:45 12/14/20 When you clean the connectors put some dielectric grease >> - ZUL8TR 15:06:44 12/14/20 Re: Have you tried >>>> - slcZ32 21:15:01 12/14/20 update!! Injectors on passenger side not clicking - slcZ32 21:17:50 12/14/20 Re: update!! Injectors on passenger side not clicking - mrchips 07:45:58 12/18/20
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