[blackfoot]

I am getting smoke in the passenger compartment of my 74 vette at random times, this has happened twice. I haven't noticed anything degrading its performance any. Also the cab became hot, I was nearly sweating and I had both windows down.

I believe it is coming out of the vents but I am not 100% certain on that. The smoke was a greyish color and was gone as quick as it came.

Anybodys thoughts on this are apperciated!

Where is it coming from and how do I fix it?

And how do I get the heat to go away? Yes, the heater is off and the blower wasn't blowing.

Temperature gauge doesn't work, radiator cap won't come off, there is coolant in the block I saw it personally and the block was full. As to weather the coolant is flowing through the radiator, I can't answer.

What should I look at?

[docvette]

Doc here,

I don't know if this is your first Corvette or not..

BUT Corvettes are Notoriously HOT inside the passenger compartment..they have no insulation...hence the consume the heat from the engine and transmission..to prevent this, install a Fire~Blanket..you'll need to pull the interior out to do it.

Smoke could be oil from the oil pressure sender dripping on the headers..or a leaky valve cover..flatten a white box, clean the engine with degreaser, then park over the box..let it run and look for drips..follow that back to the source.

Repair the Temp gauge!! Or you may be sorry later..Vettes are hot air hogs in the engine bay IF the gaskets on the body are new or in very good shape..On ALL mine , I remove the front air dam, and route the side vent grills to pick up the exit air flow, If yours are not functional, make them so..(some were just eye candy)

To Remove the radiator cap, get a leather strap wrench, and remove & Install it with that..those are intensionally hard to remove..you should be filling from the coolant recovery kit.

Doc

[blackfoot]

Thank you for your help.

It is my first Corvette…thank you for telling me! So the fire blanket would go between the carpet and the floor. Would it be a good thing to put a couple of piece of this against the firewall on the inside of the passenger compartment? Now that I think more about it, is it even possible?

I did tighten the value covers recently, before the smoke started appearing. I am think this may have been the problem.

“On ALL mine , I remove the front air dam, and route the side vent grills to pick up the exit air flow, If yours are not functional, make them so..(some were just eye candy)”

It doesn’t even have the stock air filter much less the breather for it! I am trying to grasp what you are talking about here.

Pulling air from the side vent grills on the body into the engine compartment and to the carb. Right or wrong?

The coolant recovery kit is broke and the hose is damaged as usual for my luck. I am going to replace the radiator and the mount for it within the next week.

Now the blower for the heater is running but not blowing air out the vents but the defrost works. Are the ducts to the vents two different sets, one to the defrost and one to the normal vents?

Thank you again for your help!