If a Rotax engine runs rough, often only a single cylinder is the problem. With the injector cut-off feature of the M-JET DIAGNOSTIC you can pinpoint the culprit, without expensive disassembly.
What injector cut-off does
The function deliberately switches off individual injectors. When a cylinder drops out, the engine sound and the rpm change. From that you can tell whether that cylinder is contributing at all.
How the cylinder test works
- Let the engine run at idle
- Switch off one injector in the service section
- Watch the reaction: if the rpm drops noticeably, the cylinder is working normally
- If the rpm stays almost the same, that cylinder is barely producing power
Why this is so helpful
Instead of swapping parts on suspicion, you narrow the problem down systematically. A weak or dead cylinder reveals itself immediately, which saves a lot of time during a smooth-running check.
Combine with live data
The test becomes even more meaningful together with the live data. Seeing rpm and other values in real time makes small differences between the cylinders clearly visible.
Important during the test
Only perform the cut-off briefly and with a stable power supply. For Sea-Doo vehicles the M-JET CTEK charging adapter is a good choice.
Conclusion
Injector cut-off is a genuine professional tool. With M-JET DIAGNOSTIC you use it yourself and find smooth-running problems quickly and cheaply.
