The Gunson Gastester is a digital exhaust carbon monoxide (CO) analyser with a pulse pump, accurately measuring CO levels for testing and setting carburettors (leaded or unleaded petrol) and petrol injection systems on any vehicle. The digital display clearly shows the CO volume percentage, allowing the engine to be tuned for optimal performance and cleaner, more efficient running. Ideal for checking CO after carburettor, ignition, and air filter maintenance, as well as tuning pre-cat classic cars, motorbikes, and single-cylinder engines. The system is easy to use: a metal exhaust probe is held in place with a pair of retaining springs, and a flexible pipe connects the probe to the Gastester. The kit includes everything needed for accurate CO testing and is supplied with full instructions.

• A digital carbon monoxide tester for quick, easy checking of levels after engine maintenance work & tuning. Calibrates in air, no moving parts to wear out & no filters to change.
• Delivers accurate CO measurement to 0.5% at 15° to 25°C with adjustable calibration control for precise setting.
• 12V DC battery supply required. Supplied with 2 core cables with clips for easy attachment to the car battery.
• Contents: Gastester instrument including collector box & pulse pump/water trap assembly, metal exhaust probe with retaining springs, 3x flexible pipes & detailed instructions.
• The Gastester only measures the CO level in the exhaust gas & is therefore not suitable for MOT & diagnostic checks or vehicles fitted with catalytic converters where an accuracy greater than +/- 0.5% CO is required.

List Price: £187.90 ex VAT £225.48 inc VAT