smoke coming from vents!

[Luv2explorer]

I love my explorer, but i cant fit my whole family in it. So one of my other vehicles is an 86 chevy G20 conversion van.
It's a great van, until yesterday... 25 degrees outside- I started it up, let it warm up for about 3 minutes and started backing out of the driveway, when thick smoke started pouring out of the vents!. I turned the engine off and popped the hood.....nothing. The smoke smelled like wood/leaves burning. And yes I had the heater on high. I restarted it after about 15 minutes, and it cleared up. fortanitly the van didnt blow up or char it self to deat. Unfortanitly my van smells like i lit a camp fire in it. I rebuilt the carb over last weekend, and drove it fine since then.
Could this just be a case of leaves or something burning against the blower moter or something else?? Any ideas will be very appreciated before i takle it.
Thanks

 

[Luv2explorer]

anyone??

 

[wilson_nick]

it's prolly just tryin to kill itself

 

[Nicaraguense]

Thats usually

Thats usually what happens when you smoke:smoke:
No but seriously I dunno man.

 

[Luv2explorer]

Im going to check out the blower motor this afternoon, hopefully i find a bunch of burnt leaves...

 

[Derrick C.]

I know this is an old thread but I had this happen in my X once and it was the heater core. Looks like a little radiator. Mine was behind the dash under the jocky box.

 

[Luv2explorer]

I took out the blower motor and found about 6 inches of dried pini needles and leaves buries behind it. So i now have the joy of tearing out the dash to get to the heater core because im sure thats where the leaves and stuf were burning. Too bad the heater core isnt as easy to get to as my 'X'!!!