Holley MCarbHoll2110 1957 Carburetor manual
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E CAUSE N
TROUBL
PROBABLE
CORRECTIO
(3) Rough idle and stalling. 
(Continued)
(4) Poor low-speed operation.
(5) Faulty acceleration.
(6) Surging (cruising speeds to 
top speeds).
(7) Reduced top speed.
(g) Improper fuel level.
(h) Improper fast idle cam ad
justment.
(i)
Loose or damaged idle tube. 
(a)
Idle adjusting s c r e w s u n
equally adjusted.
(b) Clogged idle transfer holes. 
(c)
Restricted idle air bleeds and 
passages.
(a) Improper pump strokes.
(b) Inoperative pump discharge 
check ball.
(c) Worn o r damaged pump 
piston.
(d) Leaking throttle body gasket. 
(a) Clogged main jets.
(b) Undersize main jets. 
(c) Low fuel level.
(d) Low fuel pump pressure or 
volume.
(e) Blocked air bleeds. 
(f)
Clogged filter screen. 
(a) Low fuel pump volume.
(b) Clogged vacuum passage.
(g) Adjust fuel level.
(h) Perform all idle adjustments. 
(i) Remove and inspect idle 
tubes.
(a)
Perform all idle adjustments. 
(b) Remove and clean carburetor 
with
solvent and blow o u t 
holes with compressed air.
(c) Remove and clean carburetor 
with solvent. Blow out pas
sages with compressed air. 
(a) Adjust pump stroke.
(b) Clean or replace.
(c) Replace pump piston. 
(d) Replace gasket.
(a) Clean main jets with solvent 
and blow out jets with com
pressed air.
(b) Replace main jets. 
(c) Adjust fuel level. 
(d) Test fuel pump.
(e) Clean with solvent and blow 
out bleeds with compressed 
air.
(f)
Clean with solvent and com
pressed air.
(a) Test fuel pump.
(b) Clean with solvent and blow 
out passage with compressed 
air.
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