20v SVT vacuum versus BT versus 16v

[Acoustic]

Hi guys

How does your vacuum reads?

all values In.Hg

1) idling (mine is 18.5 hot 16.5 cold - air cond idle 14.5 hot 12.5 cold) text book reference is 22 best 19 still acceptable

2) sudden throttle around 50% (mine goes towards 5 In.Hg then drop) same

3) full throttle (mine near 3 In.Hg) same

4) Crusing (mine near 3 In.Hg) text book around 15

5) soft deceleration (mine around 15 In.Hg) text book over 15 around 20

6) hard deceleration (mine around 22 In.Hg) text book 25 or more usually 27

I'm very concern on issue 4 because that has to do with fuel economy, please see vacuum gauge meter picture in http://www.my-acoustic.com/Car/AFM/Replace_AFM_by_MAP.htm

Is it 4 throttles different from 1 throttle???

Please share your reading.

 

[QiW]

gua tatau worrr .... wanna check or me or not ??? hahahaahahahaaa ... :lol:

if want fuel economy then drive 4AFE lorrrr ... heheheheehe ... :P

 

[Acoustic]

wah, so many sifu here also no answer meh???

how about this. check out this website and tell me what you think?

http://www.fordf150.net/howto/diagnoseengine.php

 

[netmatrix]

Bloody hell can use F150 technique to diag engines? Wah lao!

 

[TE27levin]

yes is much different..
4 throttle at low throttle the vaccum drop pretty much..

 

[Acoustic]

Originally posted by netmatrix@Feb 17 2005, 16:46
Bloody hell can use F150 technique to diag engines? Wah lao!

Ha??? what F150??? F1 I know lah

 

[Acoustic]

Originally posted by TE27levin@Feb 17 2005, 17:02
yes is much different..
4 throttle at low throttle the vaccum drop pretty much..

Ha??? 4 throttles drop allot one ah??? aiyo tiu lor !!!!!!!!!!

lan ciao 4 throttles ......... ma hai no wonder slower than VTEC lor. tiu

aiyah, like that no fuel economy lor, according to the gauge display - always in the power region, tiu lor .........

aiyah, I don't want 4 throttles liao lah, no use one, I want to change 4AF lah :)