hi guys, i was wondering if anyone has any idea what would be causing my 1993 wrx import to pour out smoke when its warm, the smoke is grey and stinks of unburnt fuel, the engine has been rebuilt using all new competition headgaskets etc, i dont think its the engine but possibly the turbo or some sensors????? im a motorsport engineer but i am baffled by my scooby, my first impression was headgasket as i assume yours will be, but im exploring all other possibilities first lol, i would really appreciate anyone who could give me an idea what it could be.

 

ecu temp sensor 1st port of call (running to rich)
02 sensor 2nd port of call (running to rich)
check the voltages as per jolly green monsters website

 

Cheers mate appreciate that, do you mean the coolant temp sensor?? i'll have a look at the lambda sensor and cts and report back

 

Has the mee engine been mapped? The build may have changed the compression ratio in the engine. Certainly sounds like its to rich.

 

have the injectors been upgraded?