It's basically a paint can with about 1/2" of mineral oil inside and a wick at the bottom. The wick connects via cables to the car battery, and you hook up an air compressor at a very low setting to blow through it.

www.ebay.com/itm/13556431...

Here it is on the MX-6's intake. I made the adapter.

Found youuu... 🔎

Looks like someone's ordering new injector seals and intake manifold gaskets.

I swear smoke testers are worth their weight in gold. 👍