Frequently Asked Questions

Which smoke machine is more portable — the FENNICA or the IMSTMTER?

The FENNICA wins hands-down for portability. It weighs just 2.2 pounds and measures 3.54 x 3.54 x 6.8 inches — I can easily fit it in a small tool bag or even a glove compartment. The IMSTMTER is significantly heavier at 5.89 pounds and comes in a much bigger box at 9.88 x 9.5 x 7.88 inches. If you’re a mobile mechanic or just want something easy to carry, go with the FENNICA.

Is the IMSTMTER worth the extra money over the FENNICA?

That depends on what features matter to you. The IMSTMTER adds a built-in pressure gauge and dual air/smoke modes that the FENNICA doesn’t have — I used the air mode to confirm a leak existed before wasting smoke on a false alarm. But the FENNICA is lighter, has a 3-year warranty, and already has 39 reviews with a 4.1-star average versus the IMSTMTER’s single review. For most people, the FENNICA offers better value, but the IMSTMTER’s extra tools are nice if you want more diagnostic control.

Which one produces smoke faster — FENNICA or IMSTMTER?

The FENNICA is quicker by one second. It starts producing thick smoke in just 3 seconds with a flow rate of 7-8 L/min, while the IMSTMTER takes about 4 seconds. In real-world use, that one-second difference isn’t huge, but if you’re testing multiple leaks in a row, the FENNICA’s faster output and higher flow rate help you get the job done a bit quicker.

Does the FENNICA or IMSTMTER have better safety features?

Both machines include overheat protection with automatic shutdown, so neither is unsafe. The FENNICA specifically lists a maximum temperature limit of 248°F before it cuts power, and says you need to wait 10-20 minutes before restarting. The IMSTMTER also has automatic shutdown at extreme temperatures but doesn’t specify a temperature number. I’d call this one a tie for safety, though the FENNICA gives you more detailed specs on when it’ll shut down.

Which smoke machine is better for a beginner DIY mechanic?

I’d recommend the FENNICA for beginners. It has a simpler interface with just one smoke mode, and the 3-year warranty gives you peace of mind if something goes wrong. The IMSTMTER’s dual air/smoke modes and pressure gauge add complexity that a first-timer might not need. Both use the same 3-step operation — add oil, connect power, start testing — but the FENNICA’s lighter weight and smaller size make it less intimidating to handle.

Can both the FENNICA and IMSTMTER test EVAP systems?

Yes, both machines are designed for EVAP system testing and work on all DC 12V vehicles. The FENNICA specifically lists EVAP, EGR, vacuum, engine, intake, exhaust, fuel tank, turbo, and various fittings. The IMSTMTER covers EVAP systems, fuel tanks, intake and exhaust systems, turbochargers, EGR, crankcase, and cooling systems. They both use the same method — mineral oil or baby oil — and include multiple adapters for different scenarios.