I was reading in another thread, how a guy hada huge black plume of smoke, and determined an injector had blown.
2 winters ago, I had an out of no where black bomb of smoke. I was on the express way at the time, accelerating about 70 mph. It was middle of winter, so about 25 degrees out. I ended up having a filter gel up and had some issues with that.
But since, no issues that I have noticed, truck does not seem to be limping or otherwise acting irradically.

I have to assume that if i dropped an injector i would know about it right?

 

If you had a bad injector you'd know it especally at idle, it would miss.
Often they will also leak fuel into the cylinder when the engine is off resulting in a black cloud at start up.

 

thanks Bill, must have just been the one time thing, probably more related to my bad filter that winter.

 

Like Bill said, you would know it right away if you had a bad injector.

Your little puff of smoke was probably some soot in the exhaust pipes breaking loose.

I had the tip of one break off a few months ago, smoke, boy did it smoke and miss and pop and carry on.