Yahoo 知識+ 將於 2021 年 5 月 4 日 (美國東岸時間) 停止服務,而 Yahoo 知識+ 網站現已轉為僅限瀏覽模式。其他 Yahoo 資產或服務,或你的 Yahoo 帳戶將不會有任何變更。你可以在此服務中心網頁進一步了解 Yahoo 知識+ 停止服務的事宜,以及了解如何下載你的資料。
how to differentiate between engine oil smoke and smoke caused by rich engine?
in petrol car engine how do you differentiate between smoke caused by burning engine oil and smoke of rich-running engine.
i have a lot of black soot deposit and white heavy smoke out of tail pipe.
is it engine oil or petrol residue?
4 個解答
- Pat F85Lv 66 年前
Black-ish smoke is too much fuel. Blue-ish smoke is oil burning. And white smoke is water/antifreeze. If the white smoke is for just a bit, after starting it up, that's ok. Especially if it's cold outside. But if it's there all the time, there's a leak, and it needs to be addressed.
- ?Lv 76 年前
As correctly stated burning oil tends to have a blue 'tinge'. The smell is also a giveaway. Oil tends to have a heavy toxic smell. A rich engine exhaust often smells of 'petrol'.
- Harley DriveLv 76 年前
engine oil smoke is bluish , rich running is black white smoke is coolant or just condensation if it's the first few minutes on a cold engine
- FrankieLv 66 年前
White is not smoke, it is steam from a dead head-gasket. Sounds like your motor is in need of serious help Bro!