Boost gauge - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

270R · 05-11-2009, 06:52 PM

hey i have a 97 black top in a s14...

I just installed my boost gauge (autometer mechanical) its pretty cool. but im wondering if my meter should be in a vaccum at idle? cuz its at zero ..
should'nt it be at a vaccum at idle? or is it like that cuz its turbo?

thanks ..

*Pacman* · 05-11-2009, 08:17 PM

Check for leaks at the gauge. Vacuum should exist at idle.

midnight_rex · 05-11-2009, 08:31 PM

yes it should be at vacuum @ idle. do what pacman says. check for leaks.

s13_sr20det · 05-12-2009, 02:43 PM

Check the way you hooked up your vacum lines, had the same problem before.

greenman100 · 05-12-2009, 02:51 PM

It has to connect to a pot on top of the TB.

dondochaka · 05-12-2009, 03:06 PM

yes you need vac at idle..
check fsm and it should tell you what the readings need to be.

270R · 05-14-2009, 08:44 PM

well I fixed it... Turns out I could only get pressure out of that port from the TB, So I teed into my waste gate now it works perfectly. damn autometer kick a**

btw does anyone know what those other ports r for? when I first got the engine they were both blocked off by a rubber cap....

05-11-2009, 06:52 PM	#1
270R Zilvia Junkie Join Date: Jul 2002 Location: Bell gardens ca Age: 24 Posts: 308 Trader Rating: (0)	Boost gauge hey i have a 97 black top in a s14... I just installed my boost gauge (autometer mechanical) its pretty cool. but im wondering if my meter should be in a vaccum at idle? cuz its at zero .. should'nt it be at a vaccum at idle? or is it like that cuz its turbo? thanks ..

05-12-2009, 02:43 PM	#4
s13_sr20det Join Date: Dec 2007 Location: Elizabeth Posts: 20 Trader Rating: (0)	Check the way you hooked up your vacum lines, had the same problem before. Last edited by s13_sr20det; 05-12-2009 at 11:26 PM.

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05-11-2009, 08:31 PM	#3
midnight_rex Leaky Injector Join Date: Jul 2008 Location: houston, tx Age: 23 Posts: 86 Trader Rating: (0)	yes it should be at vacuum @ idle. do what pacman says. check for leaks.

05-12-2009, 02:51 PM	#5
greenman100 Zilvia Member Join Date: Aug 2008 Location: Florida Posts: 230 Trader Rating: (6)	It has to connect to a pot on top of the TB.

05-12-2009, 03:06 PM	#6
dondochaka Banned from the Marketplace Join Date: Apr 2009 Location: OH Age: 27 Posts: 28 Trader Rating: (0)	yes you need vac at idle.. check fsm and it should tell you what the readings need to be.

05-14-2009, 08:44 PM	#7
270R Zilvia Junkie Join Date: Jul 2002 Location: Bell gardens ca Age: 24 Posts: 308 Trader Rating: (0)	well I fixed it... Turns out I could only get pressure out of that port from the TB, So I teed into my waste gate now it works perfectly. damn autometer kick a** btw does anyone know what those other ports r for? when I first got the engine they were both blocked off by a rubber cap....