Heater on... burnt oil smell?
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Heater on... burnt oil smell? in Past Cadillac Vehicle Discussion; I just made the correlation. When the heater is on, (obviously when it's cold outside) the car has more of ...
  1. #1
    mtflight's Avatar
    mtflight is offline Cadillac Owners Connoisseur
    Automobile(s): 1999 White Diamond ETC
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    Heater on... burnt oil smell?

    I just made the correlation. When the heater is on, (obviously when it's cold outside) the car has more of a burning oil/plastic smell.

    When it's not on, the car does not smell this way.

    Is there somewhere I should be looking for this smell? I open the hood, and can't really smell it/find it.

    Any tips are appreciated!

    Thanks.

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  3. #2
    sts96 is offline Cadillac Owners Fanatic
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    Re: Heater on... burnt oil smell?

    Check for oil seepage at the lowerlip of the cam covers at the exaust manifolds and below the crank shaft seals.
    sts96

  4. #3
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: Heater on... burnt oil smell?

    Look closely at the HVAC box mounted on the firewall. They have been known to become brittle and crack. Even had large pieces fall out. If that happens, you draw underhood air to heat the cabin. If you have a leaky cam cover or such, that smokey air is being pumped into the cabin.

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