My engine is backfiring and I think the fuel injector is flooded. The car wont start unless i unplug the injector wire and when I trun the key, plug it back in. After this, the engine wont idle and will run really loud and rough. When the engine is running there is smoke that smells like gas. Does anybody have any idea what i should do? The car is a 85 GSL-SE.

 

check the compression. how loud and rough are you talking?

 

It is louder than normal idle sound. The whole engine shakes and causes the the car to shake. It kinda seems like only one rotor is working.