Hello, thanks for writing in. I'd be happy to help. White smoke from the exhaust can be caused by a few things. First off, keep in mind that white smoke coming from the tailpipe after a cold start can be...
Ignition coils (https://www.yourmechanic.com/services/ignition-coil-replacement) can be individually replaced without concern as to engine operation however fuel injectors are a different matter. If you replace one fuel injector, the other 7 fuel injectors should be removed from the fuel rail and professionally...
