My ole' 93 Impreza has been having some issues starting sometimes. When ever it does start, for about 30 seconds after start-up it sprays out carbon out of exhaust. It actually leaves black on the pavement (kinda looks like I was aiming black spray paint).

Any help is much obliged, thanks

Max

also see my other thread on maybe fixing this with new ECT sensor?

 

Bump

 

I think this may be diagnosed with the coolant temp sensor?

Max