You need a special tester called a block check. You fill it with a special fluid and then
use it to suck fumes out of the radiator . if the fluid turns yellow it means there is exhaust gasses in the coolant.
The head gasket is blown.
You need a special measuring device, generally known as a Gaseometer, used to detect and quantify fumes.
No who, but what. All internal combustion engines emit exhaust fumes.
If your car heater smells like exhaust fumes, it could indicate a leak in the exhaust system, allowing harmful gases to enter the cabin. Another possibility is that the heater core is leaking coolant, which can produce a similar odor. It's essential to address this issue promptly, as inhaling exhaust fumes can be hazardous to your health. Consider having a mechanic inspect your vehicle to identify and resolve the problem.
Exhaust
The exhaust system is what muffles the engine sound keeps the fumes out of vehicle and away from the vehicles occupants and also filters the exhaust fumes out.
your exhaust may be jammed
Exhaust fumes from cars are an example of air pollution. They contain harmful gases and particulate matter that are released into the atmosphere, contributing to environmental and health issues.
You kids exhaust me! That exhaust fumes from that car are choking me.
Exhaust
They don't. You need to stop sniffing exhaust fumes, mister.
The most likely culprit is a blown gasket or cracked head on one of the cylinders, where fuel lines and coolant lines intersect. This can pull fuel or exhaust gas into the cooling system.