Car is smoking ,has lack of power and smells of petrol.
Hi.I lost the key to my 156 last year. A technican tried to bypass the ecu using an aftermarket engine management system .he snapped o whole lot of wires but he couldn't get it right. 2 months later I got the original key .had auto shop join the wires up again but now the Car is smoking ,has lack of power and smells of petrol.they say its the spark plugs and map sensor that need changing but the car was perfect before the snapped wires.
Could the wires being joines incorrectly cause this. Do the numerous yellow white blue wires control the firing order? Can any blue wire be connected to any other snapped blue wire and the same with the white and yellow wires?