incorrect engine timing so that it misfires
Exhaust of an engine is a gas.
backfire timing off
You have a problem with your carburator. Have it looked at
potato with in whistle in it, jammed into the exhaust pipe?
Flames will come from the exhaust when raw gas enters the exhaust then ignites. run computer codes for the engine to look for a problem causing the gas to not burn completely.
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
There are two things that can cause it. The most likely one is timing too retarded. The other is an exhaust leak. Since your car is fuel injected, you probably have the Exhaust Gas Recirculation system hooked up, and this is where most of the backfire-causing exhaust leaks come from. So it's probably timing.
I know the white smoke would be caused by coolant, which would be leaking into the combustion chamber.
yes nd it will also give of a oily smell with it
why does the exhaust gas warning lamp symbol come up on the dash board
No, white exhaust smoke is a symptom of coolant entering the combustion chamber. You my have a blown head gasket.
check vacume hoses replace any crack ones