DeSoto Carburetors for old Desoto's : DESOTO 1935 1936 1937 1938 1939 1940 1941

Form 6436C—Canadian

DESOTO 1935 1936 1937 1938 1939 1940 1941

April, 1940
Reprinted February, 1946
CARBURETER INDEX AND PRICE LIST
Year Carbureter Car List Exchange
Number Model Price Allowance
1935 E6F2 "SF" & "SG" Sup. by E6P5
1936 E6GI "S " "S2" x Sup. by 592S
937 (Ea ly) E611 I & Sup. by E6P5
"S3"
1937 E6KI-K2-K3-K4 "S3" Sup. by E6P5
(Late)
1938 E6MI "S5" Sup. by E6P5
1938 E6LI "S5" Taxi Sup. by E6P5
1939-40 E6NI-E6N2-E6N3 "S6"-"S7" & Sup. by E6P5
"Taxi"
1939-4I E6PI-E6P2-E6P3t Export Sup. by E6P5
tSpecifications and parts list for E6P3 same as E6N3 except throttle lever 4-345S, list price $0.60.
XWhen used with Sisson Choke, use I4-208S choke lever assembly with 115-30 choke connector rod and 4A-90 throttle shaft dog, and remove manual choke bracket and spring. Be sure to readjust Sisson Choke when making this installation.
MOTOR TUNE-UP—BE ACCURATE! ALWAYS USE FEELER GAUGES!
CAUTION: Change worn or leaky flange gaskets. Tighten manifold bolts and test compression before adjusting carbureter.
YEAR Q, J tee saw -
SET VALVES
(With motor at Oper-
ating Temperature)
Intake Exhaust
FLOAT LEVEL SET IDLE
(Remove Gasket) ADJUSTMENT
SCREW
(Turns Open)
SPARK BREAKER IGNITION TIMING
PLUG POINTS Use Timing Light and
GAP Time by Flywheel Mark,
or Use Motor Gauge
I935. ....._ .025” .022" Std. Head—T.D.C. .006" .008" 5/64" l/4 to I
Alum. Head—5° A.T.D.C.
I936 .025" .020" Std. Head—T.D.C. .006" .008" 5/64" 1/4 to 1
Alum. Head—5• A.T.D.C.
1937 _. 025" .020" Std. Head—.002" A.T.D.C. .010" .010" 5/64" 1/2 to 11/4
Alum. Head—T.D.C.
1938 025" .020" Std. Head—T.D.C. .008" .010" 5/64" 1/2 to II/4
Alum. Head—3° A.T.D.C.
Std. Head—2• B.T.D.C. 1
11
1939-40 .025" .020" Alum. Head—2° A.T.D.C. 008" .010" 5/64" /2 to /4
DE SOTO
1935 thru 1941
Figure shows 1940 Carburetor, No. E6N3
CARBURETER

If carbureter loads up after considerable service, check float level. Wear on lip of float lever will raise float level. Before adjusting float, be sure float lever pin Is firmly seated. Reset float level by bending lip of float lever away from needle to raise level, or bend lip toward needle to lower float level. Bend vertical lip of float only.
If motor stalls while idling, set throttle lever adjusting screw so motor runs approximately 300 r. p. m. Then set Idle adjustment screw to specifications. If these adjustments do not correct the trouble, remove idle orifice tube and plug assembly. Clean tube and passages with compressed air.
If acceleration is not satisfactory remove pump jet and clean with compressed air. However, it is usually advisable to replace the pump jet, as its cost is nominal. All jets must be seated gasoline tight.
Poor acceleration in 1937-1940 models may be due to dam-aged or worn plunger leather in accelerating pump, sediment in pump cylinder or clogged intake ball check at bottom of pump cylinder and discharge ball check in discharge pas-sage. If plunger is removed from cylinder, use care in installing to avoid damage to plunger leather.
Excessive richness above 50 miles per hour may be caused by a clogged main vent tube. After removal of rivet plug beneath float bowl with tool No. T109-42, main vent tube can he removed and a new tube inserted with tool No. T109-70. Care must be exercised in inserting new tube which must seat tightly. Use new rivet to complete the installation.
Copyright 1940
by Carter Carburetor Corporation All Rights Reserved
ADJUSTMENTS

Pump Adjustment: Remove air horn assembly, back out throttle adjustment screw, and place pump operating link In center hole of throttle shaft arm. Adjustment can be made by bending horizontal portion of pump connector link, so that top of pump plunger shaft contacts lip of indicator on pump stroke gauge T109-117S. Correct travel (27/64 inch on EgMl-E6L1) (26/64 inch on E6N1-E6N2-E6N3). No pump adjustment on E61" 2, E6G1, E611, EOK1 to E'6K4.
Pump stroke adjustable for high or low temperature. Set to longest stroke for cold weather, shorter stroke for hot weather driving.
Maximum economy and performance are secured only when breaker points, spark plugs, valves and motor timing are set to manufacturer's specifications. After motor is properly tuned, the following should also be done to insure satisfactory performance and economy:
(a) Float level must he set as above.
(b) Step-up rod in step-up jet must seat and move freely. When reassembling, jet must be screwed in tight against seat.
(c) Step-up piston in body casting should not bind and must be free of dirt.
(d) Alain metering jet can be replaced with leaner than standard metering jets, for altitude or high test fuel.
Caution: Do not attempt to gauge metering jets with drills These jets have been flow-tested, to insure correct fuel flow.