Cac480Mengine Single-Point Electric Control Injection System - Chery A11 2003 Repair Manual

13. Carburetor backfire.
Cause
(1). Engine ignited too late
distributor
(2). Incorrect Timing belt assembling or
inadequate belt tension
(3). Carburetor fuel level too low or
mixture too lean
(4). Carburetor measuring orifice blocked or
float chamber watery
(5). Spark plug overheated or too much carbon deposits
(6). Intake valve sealing not well
(7). Intake manifold or connecting hose vacuum leakage
14. Oil pressure warning light is illuminated during engine running.
Cause
(1). Engine oil level too low or not correct
(2). Oil pressure warning light woks abnormally
(3). Engine temperature too high
(4). Engine bearing or fuel pump worn out
(5). Fuel pump relief valve binding or spring deformed
(6). Oil collector blocked or loose
15. Engine self ignited.
Cause
(1). Too high idle speed, too lean mixture or
boost
fast idle gear out of work
(2). Incorrect fuel grade
(3). Too much carbon deposits in Spark plug or
combustion chamber
(4). Idle cut-off valve not works or circuit trouble
(5). Choke and throttle valve out of work
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CAC Gasoline Engine Maintenance And Servicing Manual
adjust 'teeth' belt tension and
adjust and service
check and service
check and service
fill in engine oil or apply correct engine oil
replace Oil pressure warning light
see No. 17.
check, service or replace
check or replace
clean or replace or tighten
clean carbon deposits
service or replace
check relevant connecting mechanism
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Correction
check or
tension pulley
check and adjust float chamber
needle valve
clean
Correction
Correction
adjust idle speed or fast idle
use fuel of correct grade
adjust
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