No
exhaust leak or a possible fuel line leak
Likely an exhaust leak
squeeking from exhaust manifold is caused by a leak allowing exhaust gas to leak. it will only get worse as time goes on unless it is fixed
because gas was burn after the spark plug created the spark to burn gas and keep car running.
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.
You may have an exhaust leak very close to the engine.
If there is a gas smell inside the passenger compartment of a car, there is probably an exhaust leak in the system. Have it checked immediately.
The same reason a home fireplace needs a chimney. Cars burn fuel and air. The byproduct of this is exhaust gas. The exhaust gas needs to be expelled somewhere so it is piped out under the vehicle to the back where nobody will be breathing it.
headgasket leak and exhaust gas is getting into the coolant
The motor in your car does not burn the fuel completely, and what is left over is excreted into the atmosphere.
Automotive, the exhaust gas is recirculated to burn the gas that didn't get burned completely the first time. Home heating, the exhaust is recirculated to recover the heat from it to help heat the home. This reduces the overall cost of heating.