If a Rotax engine is running roughly, often only a single cylinder is the problem. With the injector shutdown function of the M-JET DIAGNOSTIC, you can pinpoint the culprit without expensive dismantling.
What injector shutdown does
The function selectively shuts down individual injectors. If a cylinder fails, the engine noise and RPM change. This allows you to determine whether this cylinder is contributing at all.
How the cylinder test works
- Let the engine run at idle
- In the service area, shut down an injector
- Observe the reaction: If the RPM drops significantly, the cylinder is working normally
- If the RPM remains almost the same, this cylinder is delivering hardly any power
Why this is so helpful
Instead of replacing parts on speculation, you systematically narrow down the problem. A weak or dead cylinder reveals itself immediately, which saves a lot of time during rough running checks.
Combine with live data
The test becomes even more meaningful when combined with live data. Seeing RPM and other values in real-time makes small differences between cylinders clearly visible.
Important during the test
Perform the shutdown only briefly and with a stable power supply. For Sea-Doo vehicles, the M-JET CTEK charging adapter is suitable for this.
Conclusion
Injector shutdown is a real professional tool. With M-JET DIAGNOSTIC, you can use it yourself and find rough running problems quickly and affordably.
