Ignore me, just being blonde ..... again.. :$
Last edited by Legnum Boy; 27-01-2005 at 09:36 AM. Reason: Cos im a prat
Legnum Boy
Kwik Kwak's Rule
Isn't there negative pressure at idle in the intake manifold. You often see the boost guage go into the negative at idle.
Subaru Legacy 2.5i SE
Slow piece of sh*t
No mods as its a company car.
Correct, but should you then remain to have negative pressure after the engine has been switched off?
Like I said, just me having a blonde moment....
I would hope that you always see the boost gauge ro -ve at idle! If you dont you have a problem!Originally Posted by simpsonm
I normally get -500mb at idle, but when it was poorly this was down (up?!) to -200mb........a sure sign it was dying!
So what does everyone else see at idle? I noticed in Dereks car he is hitting -610mb!
Mine is -450mb at warm idle.
Last edited by Legnum Boy; 28-01-2005 at 03:13 PM.
I have fitted an imperial gauge ie: it reads in psi for boost and inches of mercury ( ins/hg) for vacuum ( -ve pressure), much more sensible for me! At tickover it reads 22 ins/hg and throttling off this increases to 27 ins/hg! And as the scale only reads to 30 ins/hg I think thats bloody good!
-20psi at idle - goes up to around -27 to -30psi whilst engine braking.
-30psi? :eek:
NZ Chat
Posting Permissions
Reply With Quote