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Support >>> Title: Carbon fouling
Added:2010-03-31  Click:6257   

Black carbon fouling deposited on the firing-end of the plug,when this become serious,it may cause misfiring,

Cause:carbon fouling is ususlly the result of an overrich fuel mixture,misusing of chock,clogged air filter,too much oil consume,related ignition timing,long time low speed operation,the plug used is too cold.

Action:inspect the output voltage of ignition coil,unloaded output voltage exceeds 20KV,installing a hotter type of spark plugs.

chart:


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