MoTeC Global Forum

I recently got a Porsche 968 motor that sat for many years running again. It has the same M4 and map as when it last ran years ago. After a shakedown run at the track a couple weeks ago, I downloaded the logs and found injector errors. In approx. 4.5 minutes of logs, I see a few seconds worth of errors for each injector (injector 4 had the most at 18 seconds worth). The errors seem spread out during the 4.5 minutes. There are also a couple seconds worth of Sync errors in the logs. The EMP diagnostics screen shows OK for each injector. The engine seemed to run fine from a "seat of the pants" standpoint. The injectors are older Bosch units that I had rebuilt while the engine was being rebuilt. I saved the logs from this engine's last run years ago before the car was put in storage, and there aren't any injector errors.

Should I be concerned about injector errors in the logs? Thanks.

Scott

I checked the EMP diagnostics again, and it reads OK for all 4 injectors. I also did the injector test for about 30 seconds and didn't notice any issues. And then re-downloaded the logs to see if any new errors show in the logs - there aren't any. This is of course at low duty cycle. Does the engine need to be running to properly test this?

The only time logging starts is when the engine is running.

If it is a old loom then replace the injector connector pins also have a look at drawing Z05

Thank you SprinterTRD. I poked around on the Motec site and googled, and can't find drawing Z05. Where should I look for that?

Here is the Z05 drawing: