Depends on where the hole is. Before an oxygen sensor, it may be causing your vehicle to over/under fuel itself, and in that case possibly. Close to the manifold, it may allow much cooler air to the exhaust valves and warp a valve and then the answer would be yes. Further down, say at or beyond the catalytic converter, typically the answer would be no.
no
Exhaust gasses are escaping through a hole or rotted section of exhaust system
No, it will just make the car loud.
The cause of an exhaust indicator light in a Volkswagen Beetle is probably an oxygen sensor. There also a possibility that an exhaust pipe is plugged or there is a hole due to rust.
You can drill a hole in anything as long as you have a strong enough drill bit and drill. But why would you want to drill holes in your exhaust? The exhaust piping is there to route exhaust gases away from underneath the car so they don't pool up underneath your car and seep into the cabin and cause a variety of health problems.
Radiators do not have exhaust.
One of the causes could be a hole in the exhaust
If the hole is smaller than a nickel, I would not worry about it. If the hole is on the bottom side of the exhaust pipe, it might actually be a good thing, as it would allow the water in the exhaust to drain out before it enters the muffler. Some newer cars have drain holes in the exhuast system to prevent things from rusting out quickly.
Yes! Then you would have triple exhaust.
A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.
No, but it can kill you from carbon monoxide poisoning or at the very least put you to sleep and cause you to have a wreck. Carbon monoxide is odorless, and tasteless.
If you have an O2 sensor, your O2 sensor will not read exhaust gases properly which may cause the ECU to make the engine run rich. Yes. Holes close to the engine in the headers may also cause unburned fuel to ignite in the headers causing backfiring.