SMOKE COMING FROM VENTS on 1991 Ford Explorer

I MADE REPAIRS HAD SMOKE FILLING UP THE CAB OF MY CAR. MECHANIC SAID IT WAS FUEL INJECTOR. I NOW HAVING SMOKE FILL UP MY CAR AGAIN - MY HEAT AIR BLOWER HAS BEEN MAKING A NOSIE FOR AWHILE, BUT NOW IT IS SO LOUD I'VE GOT TO TURN IT OFF AT A DRIVE THRU.

Asked by for the 1991 Ford Explorer
1 answer
You could have debris in the plenum. Remove the blower motor and check for debris. As to what is filling up your car with smoke - not entirely sure; is it like burning smell, or just like moisture?