If its smells like gas, you are putting too much gas in the engine and some is unburnt and going out the exhaust. Exhaust underneath means there is a leak in the system somewhere. If there is no louder noise or hissing, I would expect the catalytic converter is leaking. Have it checked and get a tune up. http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info answer bad exhaust pipe
Sounds like you have a coolant leak.
we hate it cause usually if its loud then it hurts the earth and smells alot. plus women like to talk to guys and if the exhaust is loud we cant be heard.
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.
loose exhaust pipe or muffler is most common
Sounds like your problem is probably a loose heat-sheild or a loose exhaust. Have it checked.
Having a dead skunk in the exhaust might be your problem. It's serious, I get it a lot in my Camaro. if it smells like rotten eggs its a bad catalytic converter....chances are its this much more likely than a dead skunk.
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A customer's auto is producing blue exhaust. What could cause this
can exhaust manifold leak cause you to burn oil
Hey Chris==You really need special gauges to check the exhaust gasses. Take it to a garage that haas these gauges. GoodluckJoe Thanks joe, but I just got emmisions, and everything that Arizona emissions testing tests was about 1/2 the limit, where 2 years ago they were less than a 10th. I had the injectors replaced, and changed out the Y-pipe on the exhaust before, but now the gradual problem has given my car a major performance hit, the exhaust is very rich, (in other words in engine not getting enough air). What could be things that would cause that? I use sythetic oil now to help protect, but there is definatly a problem. And lets say it's not compression, what then? Check your EGR valve. A plugged EGR will cause loss of power and will cause the exhaust to smell like rotten eggs.