Compression tester for gasoline engines QUATROS QS30191

Description Compression tester for gasoline engines QUATROS QS30191

Compression tester for gasoline engines for CPG diagnostics. A device for quickly detecting malfunctions of valves, piston rings, cylinders, and cylinder head gaskets.

Article: QS30191

Functional Purpose

A professional compression tester for measuring compression in gasoline engine cylinders, allowing for quick identification of CPG (cylinder-piston group) problems.

Compatibility

Suitable for all gasoline vehicles. M14×1.25 and M18×1.25 adapters for various spark plug hole types are included in the kit.

Measurement Range

Manometer 0–300 PSI / 0–21 kg/cm². Includes a rigid tube 150 mm with a universal rubber connector and a flexible hose 325 mm.

Description QS30191

The QS30191 Compression Tester for gasoline engines is a professional diagnostic device for workshops performing checks on the cylinder-piston group. This petrol engine compression tester allows for quick and accurate compression measurement in each cylinder, identifying issues with valves, piston rings, cylinder walls, or the cylinder head gasket.

Diagnosing an engine without a compression tester often leads to incorrect conclusions, unnecessary repair costs, and missed faults. The QS30191 completely solves this problem: its pressure gauge with a clear scale of 0–300 PSI (0–21 kg/cm²) provides accurate readings; the 150 mm rigid tube with a universal rubber connector allows for quick connection to the spark plug hole; and the 325 mm flexible hose ensures access to hard-to-reach areas.

Specifications

⚠️ Important: For accurate results, perform measurements on a warm engine with the throttle fully open. Disconnect the ignition connector before testing.

Kit Contents

When to Use This Compression Gauge

• When diagnosing engine malfunctions (e.g., loss of power, increased oil consumption).
• To check the condition of piston rings before overhaul.
• When detecting misfires or uneven engine operation.
• To check valve tightness after engine overheating.
• When assessing a vehicle's condition before purchase.

Advantages of QS30191

Clear Scale

A large manometer with two scales (PSI and kg/cm²) provides accurate readings.

Two Connection Types

A rigid tube for quick connection and a flexible hose for hard-to-reach places.

Versatility

Suitable for all petrol engines thanks to M14×1.25 and M18×1.25 adapters.

Frequently Asked Questions

What is the normal compression for a petrol engine?

Normal values depend on the specific engine, but typically range from 10–15 kg/cm² (140–210 PSI). The difference between cylinders should not exceed 10%.

Can this compression tester be used for diesel engines?

No, this compression tester is designed exclusively for petrol engines. Diesel engines require a device with a higher measuring range.

How do I measure compression correctly?

Warm up the engine to operating temperature, remove all spark plugs, disconnect the ignition connector, fully open the throttle, and crank the starter 5-6 turns.

What is the warranty for the QS30191 compression tester?

The device comes with a 12-month warranty against manufacturing defects under proper use.