你這個應不是coolant leak, 而是汽油汙染造成的。冷卻液的沉積物是淺色小顆粒。你沒往汽油裏加過清洗劑什麽的吧？對於

氧氣探頭上各種顏色沉積物的成因，請看以下敘述：antifreeze contamination will leave light colored grainy deposits. Black carbon deposits on the sensor tip may indicate a very rich fuel condition. White or reddish deposits indicate fuel contamination...........