Witelida WA-SM-SH02
A gauge-and-flow-meter machine for vacuum and intake leaks. The listing gives no warranty.
Amazon $109.99$109.99
The Witelida WA-SM-SH02 is the better automotive smoke machine overall, rated 3.5 to 3.3. The Witelida WA-SM-SH02 leads on measurement. The Solary SD302 costs $14 less ($95.99 vs $109.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Solary SD302
A mid-price gauge-equipped machine for vacuum and intake leaks. Solary does not publish its output pressure, so check it before testing an EVAP system.
Amazon $95.99$95.99
Which should you buy?
- Choose the Witelida WA-SM-SH02 for measurement (pressure gauge, flow meter vs pressure gauge).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every no EVAP mode stated automotive smoke machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | Witelida WA-SM-SH02 | Solary SD302 |
|---|---|---|
| Overall rating | 3.5/5 | 3.3/5 |
| Value 30% | 68 $109.99 | 74 $95.99 |
| Pressure coverage 25% | 50 up to 20 PSI | 50 pressure not published (neutral score used) |
| Measurement 20% | 80 pressure gauge, flow meter | 40 pressure gauge |
| Features 15% | 50 built-in air pump, air-only mode | 50 built-in air pump, air-only mode |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Witelida WA-SM-SH02 | Solary SD302 | |
|---|---|---|
| Pressure and smoke | ||
| Output pressure | 20 PSI | - |
| Pressure display | Gauge | Gauge |
| Flow meter | Yes | - |
| Air-only mode | Yes | Yes |
| Power and fluid | ||
| Air source | Built-in pump | Built-in pump |
| Power | - | 12V battery |