EVAP Smoke Tester Recommendation

[McGyver]

I really need to get a smoke tester to help diagnose some rough running. I'm past the days of spraying carb cleaner around the engine bay to find leaks.

I have notice there are two main types: 1) Requires an air compressor, 2) Internal Air Compressor.

The internal seems more convenient, but they all output 15-17 PSI, which is WAY too much for an NA intake system. The external compressors tend to be regulated down to 0.5-1.0 PSI, which is sufficient to test anything without breaking something, but a hassle to pull out an air compressor.

I also require a flow gauge to know when I've found all of the leaks.

In the past I've used a Redline Smoke Pro at a shop, but $870 is WAY too much cash for a hobbyist. It also requires an external compressor. Autoline Pro makes a machine for $130 with a built in compressor ay 0.5 PSI, but no flow gauge. I know I can add one on, but I'd prefer it to be built in.

It would be awesome to get an internal compressor with independently adjustable flow and pressure. At minimum, a built in compressor in the 0.5-1 PSI range with a flow gauge. Does anyone make something like that for less than $300?

[82eye]

just build one. there's piles of diys. some use a bike or small hand pump to provide the pressure. very little is needed.

[Digitalwave]

Wouldn't it be fairly easy to choke down 15-17 PSI down to whatever you want it at?

[aavani90]

I can vouch for this one, but yes no gauge. It’s easy to use, produces thick smoke, only con is that it will stink up your garage like burnt mineral oil for a few day after use. Even after that, you can still smell the device from like 5 feet away. I’d suggest storing it in a ziplock when not in use, unless you’re into the smell.

[Chilezen]

I have the Autoline Pro you mentioned. I like it, it worked for me. I didn't see a need for a flow meter/gauge.

[jrobie79]

I built one, then used a propane grille regulator to drop the pressure down to like 1psi.

[jeffnhiscars]

I bought this one off of Amazon and it does exactly what it should. It has a built in regulator and no flow guage but it does have a valve so you can control smoke volume. I don't see why you'd need anything more

[dnguyen1963]

I built one using an old solder gun, rag, mineral oil, and a hand pump.