Diesel Compression Tester Kit 12pc Injector & Glow Plug

A 12-piece diesel compression tester kit used for checking cylinder pressure on diesel engines through injector and glow plug adaptor points. Built for direct and indirect injection testing, it gives a practical way to investigate hard starting, poor running and suspected compression loss.

Used for fault finding during servicing, repair work and engine diagnosis, this kit suits garage use, workshop testing and more serious home maintenance. When a diesel engine is showing uneven running, lack of power or starting trouble, a compression test can help narrow down whether the issue is linked to valves, piston rings, head sealing or general cylinder condition. It is useful for mechanics and experienced DIY users working across a range of diesel engine setups.

The kit includes a dual scale gauge along with a selection of glow plug adaptors and dummy injectors to cover different fitting points. Sizes supplied include glow plug adaptors in M10 x 1.0, M10 x 1.25, M12 x 1.25 and M14 x 1.25, plus dummy injectors in M20 x 1.5, M24 x 2.0 and a Stanadyne dummy. Also included are a replacement seal and washer set, a 90 degree elbow and a clamp plate, which helps when access is tighter around the engine bay. The range of adaptors makes it more useful for regular diagnostic work without needing separate pieces for common test points.

Compression tester kit specifications

• Contents: 12-piece diesel compression test kit for injector and glow plug testing.
• Gauge type: Dual scale gauge for checking cylinder pressure during diagnosis.
• Glow plug sizes: M10 x 1.0, M10 x 1.25, M12 x 1.25 and M14 x 1.25.
• Dummy injectors: Ø21mm, M20 x 1.5 and M24 x 2.0 sizes, including a Stanadyne dummy.
• Included parts: Replacement seal and washer set, 90 degree elbow and clamp plate.
• Compatible makes: BMW, Mercedes-Benz, Ford, VW, Toyota, Renault, Volvo, Mazda, PSA, Opel, Nissan and Vauxhall.

A practical choice for regular diesel engine testing and fault finding.