Thick White Smoke at Wide Open?

420Bullnose

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So I'm looking at buying another IDI, it's an '86 6.9.

After going over it, I took it on a test drive and there was no lack of power for a N/A IDI. I parkedit , having it all warmed up and idling, I gave her the beans, all of them! and there was no hesitation, stumbling or surging.

However there was a Thick white smoke coming out of the tail pipe, I let off and went back to idle smoothly.

It didn't smell like Coolant or Oil.

I have an idea of what it might be, but I want to get some of your guys thoughts on what might be causing this to occur.

Thanks,
420Bullnose
 

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