Diesel Engine Compression Tester Manufacturer,Supplier and Exporter in India
Product Code : EL-AELE-9393
Jlab Export is a leading Diesel Engine Compression Tester Manufacturer,and suppliers in India
Worn rings, burnt valves or a leaking head gasket all show up as low cylinder compression, and this tester measures it on diesel engines. It works on direct and indirect injection engines, with various size adaptors and a quick release fitting. The large dual-scale gauge sits on a 355 mm flexible hose and has a pressure release valve.
Specifications
| Engines | Direct and indirect injection diesel |
| Gauge | Large, dual scale |
| Hose | 355 mm, flexible |
| Adaptors | Various sizes, with quick release fitting |
| Release | Pressure release valve |
| Minimum order quantity | 5 units |
| Dispatch time | Usually 7–10 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Exercises: Compression Testing
On the Diesel Engine Test Bed, a four-cylinder diesel, students warm the engine, stop it and cut the fuel so it cannot start. They take out the injector on a direct injection engine, or the glow plug on an indirect injection one, and screw in the matching adaptor. Each cylinder is cranked for the same number of strokes and the peak reading is noted.
Students then compare the cylinders. One low cylinder points to rings, valves or the gasket, while two low neighbours often mean a gasket failure between them. The wet test, with a little oil added, is a petrol engine check done with the Cylinder Compression Tester for Petrol Engine. On a diesel it is avoided, because oil in a high-compression cylinder can ignite or cause a hydraulic lock.
Frequently Asked Questions
Can it test both direct and indirect injection diesels?
Yes. The various size adaptors let the gauge be used on direct and indirect injection engines. The quick release fitting lets students move the gauge from one adaptor to the next without loosening the adaptor.
Why is a diesel compression tester different from a petrol one?
Diesel engines compress air much harder than petrol engines, so the gauge must read far higher pressures. The adaptors also go into injector or glow plug holes rather than spark plug holes. Never fit a petrol gauge to a diesel.
How do I read the results?
Note the peak reading for each cylinder after the same number of compression strokes. Compare the figures with the engine maker’s value and with each other. One cylinder well below the rest needs further checks.
What is the pressure release valve for?
After each cylinder, the valve lets out the trapped pressure so the gauge returns to zero before the next test. It also lets students take the hose off without a burst of compressed air.
Should the engine be warm for the test?
Yes. Test at normal operating temperature where possible, with a fully charged battery, so the cranking speed stays the same for every cylinder. Slow or uneven cranking gives low and uneven readings.
Other Engine Testers
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Last updated: 5 November 2026
