Honda Civic Service Manual page 565

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Evaporative Emission (EvAPl Two Way Valve T6ting
'99 - 00 modols:
'L
Remove the fuel tank (see page 11-242).
2.
Remove the vapor line {rom the EVAP two way
valve (located above the EVAP control canister), and
connect it to a T-fitting from vacuum gauge and
vacuum pumo as snown,
VACUUM/PRESSURE
GAUGE
0 - i l i n . H g
07JAZ - 001(x)08
r y ( L
"*'"""_,";f1
T.FITTING
Apply vacuum slowly and continuously while watch-
ing the gauge.
The vacuum should stabilize momentarily at 0.8 -
2.1 kPa {6 - 16 mmHg, 0.2 - 0.6 in.Hg).
l f t h e v a c u u m s t a b i l i z e s ( v a l v e o p e n s ) b e l o w
0 . 8 k P a ( 6 m m H g , 0 . 2 i n . H g ) o r a b o v e 2 . 1 k P a
(16 mmHg, 0.6 in.Hg), install a nsw valve and retest.
Move the vacuum pump hose from the vacuum fit-
ting to the pressure fitting, and move the vacuum
gauge hose from the vacuum side to the pressure
side as shown.
GAUGE,0 - 30 in.Hg
4973X - (Xl -
xxxxx
J .
5.
Slowly pressurize the vapor lin€ while watching the
gauge.
T h e p r e s s u r e s h o u l d b e s t a b i l i z e m o m e n t a r i l y
above 1.0 kPa (8 mmHg, 0.3 in.Hg).
. l f t h e p r e s s u r e m o m e n t a r i l y s t a b i l i z e s ( v a l v e
opens) above 1.0 kPa (8 mmHg, 0.3 in.Hg), the
valve is OK.
. ll the pressure stabilizes below 1.0 kPa (8 mmH9,
0,3 in,Hg), install a new valve and retsst.
(cont'd)
11-295