Why is my car smoking from under the hood?

I have a 2008 mustang. It was smoking a few weeks ago and I took it to the shop they said it needed a new radiator so I paid to have that replaced as well as all the hoses and what not. Now it’s smoking again. It never overheats on the temp gauge but it’s smokes. Why could this be when I just replaced the radiator? They said that was the issue and it was fine for a few weeks. 

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  • 1 month ago
    Favorite Answer

    Radiators do not smoke, but they can steam when there's a coolant leak. If your car is *smoking*, it probably has an oil leak burning on the exhaust. If there is still steam coming off the engine, the mechanic may not have fixed all the leaks, or he left a hole loose to leak more.

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    • Lv 4
      1 month agoReport

      good answer; maybe check the valve cover bolts for correct tightness & nonleakage, and also for any oil/grease  seepage/ dripping/ splatter onto a manifold and/or onto exhaust tubes; leaking coolant may steam & smoke, but it generally leaves an orangish or whitish residue,& the coolant level lowers 

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  • 1 month ago

    A hose clamp may be loose. Take it back to the mechanic that replaced the radiator for him to inspect his work. No charge!

    Source(s): Mitsubishi Master Tech
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  • Anonymous
    1 month ago

    The car is leaking coolant again.  That is all there is to it.  Get the cooling system pressure tested to find the leak.

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  • 1 month ago

    What does it smell like?

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  • J J
    Lv 7
    1 month ago

    Here is something different, lift the hood and look.

    • Dallas1 month agoReport

      Wow. Thanks! Gosh who would’ve ever thought of that. Maybe I asked a ******* question because I don’t know what to look for how about that? 

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