Weifang 495 - Abnormal Exhaust Smoke

(1 ) Readjust the fuel delivery
(4 )The, piston rings: are stt.lk by ( 4 ) Clea:n'>: off the~carbon> tle-
carbon' deposits or are . worn posits or replace the rings.
out.
2) .~Abnormal opera'tion, ,6f ,the
fuel, system. ;
.( 1')'Th·e fuel delivery timirt'g' is
incorrE!ct,. .
( 2 ) The plungers of inje'etion
pump,. 2i':re,worn :out.·
(3) Fuel' spray of injector is:'I1ot
'well; ,atomized'.,;: '
(4 )Insufficient fuel supply.'
3). Air cleaner is choked.
timing.
(2) Replace the plungers (do it
in- a'servicezworksh'(;)~p):~~'
(3 ) Wash cleaning 'or! replace 'the
i1ozz1e';"assembly~
(4) Ch'eck wnethert'hefuel
t
pas-
sage is blocked.
3). Clean or.\replace:."~the :-fillter
element'lt;
Abnormality-, &. Cause: '
1). Black smoke.
(l)Engine is over-loaded.
(2)Fuel spray is not-well,atom ... :
ized.
(3) Injection timing is too late~-'
Re,medy .. ·
(1) Reduce the load.
('2.)·Clean.or replace the nozzle
assembly.
( 3 ) Check:··8Rd.'adiust.thefuel
delivery advance angle ,it should
be of 16±~:
101