Video: How To Diagnose a Car Repair Problem By the Smell

Most vehicles start out with a "new car" smell, but there are other specific odors that motorists should never ignore. Identifying these suspect smells early on can help car owners be "Car Care Aware" and avoid the hassle and expense of an unexpected breakdown.

Unusual smells can be the sign of serious, and potentially costly, trouble for your vehicle. By acting quickly and making necessary repairs, you'll be able to breathe easy knowing there is no harmful damage to your car.

Use the sniff test to identify any unusual smells in your vehicle, including the following six warning signs:

1. The smell of burnt rubber could be slipping drive belts or misplaced loose hoses that may be rubbing against rotating accessory drive pulleys. Do not reach in if the engine compartment is hot.

2. The smell of hot oil could mean that oil is leaking onto the exhaust system. To verify the leak, look for oil on the pavement or smoke coming from the engine area.

3. The smell of gasoline is likely the sign of a gas leak in some area of the vehicle such as a fuel injector line or the fuel tank. Any smell of fuel can result in a possible fire hazard, so give this warning sign your immediate attention.

4. The sweet smell of syrup may be a sign that your car is leaking engine coolant from a leaky component related to the car's cooling system. Do not open the radiator cap when it is hot.

5. The smell of burning carpet could be a sign of brake trouble and a safety hazard. Have your brakes checked right away, especially if this smell is happening during normal driving conditions.

6. The smell of rotten eggs is never a good one and, if you smell it coming from your vehicle, it could mean your catalytic converter is not converting the hydrogen sulfide in the exhaust to sulfur dioxide properly. This smell can also be attributed to a poorly running engine, causing the catalytic converter to become overloaded and fail due to meltdown.

You should never ignore a peculiar odor in your car. Instead, bring your vehicle to the professional service technician that you trust in order to get an informed opinion on the nature of the odor.

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