Sable car GAZ-2752, 2217, 2310>> Appendices>> Determination of malfunctions of the engine on a condition of spark plugs

Determination of malfunctions of the engine on a condition of spark plugs

Type of pollution of a candle
Possible reason
Accompanying sign
Way of elimination
Easy light gray or light brown raid The engine is in good repair. The candle corresponds to the engine on kalilny number Fuel consumption, engine oil and toxicity of the fulfilled gases correspond to norm
Opaque black soot Wrong adjustment of the carburetor or corner of an advancing of ignition The increased fuel consumption, decrease in the engine capacity, unstable work idling, is complicated start-up Adjust the carburetor or ignition
Low compression because of a leakage of valves or wear of tsilindro-piston group Repair the engine
Pollution of the air filter Replace the filter
Wrong installation of a spark gap Adjust a spark gap (0,7–0,85 mm)
Crack in an insulator Replace a candle
Kalilnoye number of candles more necessary for this engine Replace candles
Wet black oily deposit Oil hit in the combustion chamber The raised consumption of the oil, unstable operation of the engine idling, is complicated start-up Replace maslosjemny caps of valves or piston rings
Thick layer of friable deposits Poor quality of gasoline or oil Interruptions in operation of the engine, start-up is complicated Replace fuel or engine oil. Wash out greasing system, clear candles
Deposits of red color Excess of admissible standards of concentration of metallic additives in gasoline Interruptions in operation of the engine, start-up is complicated Replace fuel and candles
Oplavleniye, burning out of electrodes, cracks on a thermal cone of an insulator or its destruction Kalilnoye number of candles less necessary for this engine Interruptions in operation of the engine, start-up is complicated Replace candles on corresponding to this engine
Malfunction of system of cooling Engine overheat Find and eliminate malfunction of system of cooling, replace candles
Too big corner of an advancing of ignition Detonation (characteristic metal knock in cylinders) Adjust a corner of an advancing of ignition, replace candles
Application of nizkooktanovy gasoline Replace fuel and candles