Automotive diagnostic kit built to deliver clear, repeatable compression readings for petrol engines. Quick, reliable checks save time and reduce guesswork when tracking down worn rings or leaking valves. Is the DAYUAN Professional Petrol Engine Compression Tester Kit accurate and robust enough for regular workshop use?
⚡ At a Glance
- • Gauge Range: 3" dual-colour scale, 0–300 PSI (0–20 kPa)
- • Best for: Home mechanics and small workshops checking petrol engines on cars and motorcycles
- • Not ideal for: Diesel engines or users needing digital logging and data capture
Mechanical compression testing kit with multiple adapters for spark plug threads and quick-check cones. Dual-colour gauge presents PSI and kPa readings for straightforward interpretation.
Reliable diagnosis – thanks to the 3-inch dual-colour gauge
3" dual-colour scale shows measurements in both PSI and kPa on a simple analogue dial. The graduated face makes it easy to compare readings between cylinders without converting units.
Accurate, repeatable readings help identify low-compression cylinders quickly. Faster diagnosis reduces the chance of chasing the wrong repair.
Broad compatibility – with multiple threaded fittings and spark plug adapters
Kit includes M10, M12, M14 and M18 male fittings with O rings, plus 14mm and 18mm spark plug adapters to suit common spark plug thread sizes and depths.
One set covers a wide range of petrol car and motorcycle engines so fewer extra parts are needed. Fewer adapter swaps mean quicker testing across different engines.
Rapid preliminary checks – with two rubber cone quick-check ends
Two rubber cone ends allow non-threaded, push-fit checks directly into the plug hole for a fast inspection without threading an adaptor into the head.
Quick-check cones permit a fast assessment of cylinder condition before committing to full threaded tests. Useful for speedily ruling out or confirming compression problems on multiple cylinders.
✨ The 4 Key Reasons for DAYUAN Professional Petrol Engine Compression Tester Kit
- Well-made construction – Durable metal fittings last through repeated workshop tests and handling
- Consistent readings – Repeatable measurements reduce diagnostic uncertainty across multiple cylinders quickly
- Clear dual-colour gauge – Fast visual readout highlights low compression without complex conversions
- Easy to use – Threaded adapters and cones enable tests without specialist workshop tools
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: DAYUAN
- Model: Professional Petrol Engine Compression Tester Kit
- Gauge Size: 3-inch dual-colour scale
- Measurement Range: 0–300 PSI, 0–20 kPa
❓ Frequently Asked Questions
Q: Can this be used on motorcycles as well as cars?
A: Yes, the kit includes adapters for a wide number of vehicles and specifically lists compatibility for cars and motorcycles, with 14mm and 18mm spark plug adapters included.
Q: What pressure range does the gauge measure?
A: The 3" dual-colour gauge measures from 0 to 300 PSI and also shows 0 to 20 kPa on the same scale.
Q: Are there adapters for different spark plug thread sizes?
A: Yes, supplied fittings are M10, M12, M14 and M18 (male, with O ring), plus 14mm and 18mm spark plug adapters and two rubber cone ends for quick checks.
🏆 Our Verdict
Most suitable for home mechanics and small workshops who need reliable compression checks on petrol cars and motorcycles. Multiple threaded fittings, spark plug adapters and a 3" dual-colour gauge allow accurate and quick compression testing. Strong value and dependable construction give confidence that readings will remain consistent over regular workshop use.
