Carburettor Balance - Lotus TURBO ESPRIT Service Manual

SECTION EMA
.
..
:
Page
.
,
I9
SUB
GROUP F
-
Carburettor Balance
-
1
.
Remove vacuum tapping screws, f i t carburettor balancing tubes and connect
to manometer.
+
2. Adjust throttle stop screw to give specified idle speed of
950
-
50
r .p .m.
with engine at normal operating temperature. Check that a l l
4
columns
are balanced within 3mm.
If
not continue balancing procedure.
VACUUM TAPPING SCREW
IDLE STOP BRACKET
THROTTLE COUPLING
SCREWS
FRONT
OF
VEHICLE
' L
FRONT
-
CARBURETTOR
Remove anti-tamper plugs to gain access to the throttle coupling and
balancing screws.
Emure that a l l balancing screws are closed. (do not graunch).
Whilst maintaining idle speed, adjust throttle coupling screws to balance
lower of columns
1 , 2
with lower of column 3,4.
NOTE:
Ensure that both clamping screws on the balance lever are i n
secure contact with thebalance arm.
Considering the carburettor barrels i n pairs (1,
2
and 3,4) note which of
the two mercury columns for each pair i s higher and gradually move only
the corresponding balancing screw until the two mercury columns of each
.pair are balanced within 3mm. Maintain correct idle speed arid ensure that
a l l
4
mercury columns are within 3mm.
On completion disconnect manometer and remove balancing tubes and
replace vacuum tapping screws securely. Fit new anti-tamper plugs
to both thmttle coupling screws,
4
balancing screws and
4
mixture screws.
Ensure that fuel pipe connections are secure.
APR 1987