What causes a car engine to backfire when the injector wears out?
What causes a car engine to backfire when the injector wears out? Usually, when an injector clogs or wears out, causing the air-fuel mixture to lean, the combustion process weakens and fails to properly burn the fuel. Too much unburned fuel then enters the exhaust system where the fuel ignites with a loud bang. How does the EGR work on an engine backfire? Backfire is one of them. The EGR system is designed to reintroduced a measured amount of exhaust gases back into the cylinders for reburn. This reduces combustion temperatures and dangerous emissions like NOx (oxides of nitrogen). The...