Hyosung Motorcycle Cold Start Problem

Hyosung Motorcycle Cold Start Problem – Well, it has been almost 3 weeks now I am having this problem. Basically, my bike is having hard time to start in the early morning, i.e. Cold start and it takes me about 10-20 minutes to fire it up. However, once the engine is warmed up, the subsequent start fired up without any problems. So the issues is with cold start and not warm start.

I don’t think there is an issue with the battery as the bike is just about 3 months old and the lights, horn, signal are working in a good condition.

I did not manage to record a video to describe my problem, but upon searching online, I found someone posted a video which the issue is similar to mine. The video can be view below:

*Video credited to the original owner. I do not own the rights.

I’ve read online and there are only two possibilities that I’ve narrowed down. This could be due to Engine Temperature Sensor (ETS) or the Roll Over Switch. (RO).

Today, I took half day and ride my bike to Naza Service Center in Shah Alam. The first thing that they checked is to see if the is any errors via the Hyosung Diagnostic tool as per below.

The good news is, there is no error shown at the ODO meter.

The next step, I insisted them to check on the battery just to make sure it is good and it looks like that is the case. The battery reading was increasing as soon as they Rev the engine at about 5K RPM which indicates both Battery and the Rectifier is in good hand.

They have then concluded that this issue is with the Engine Temperature Sensor (ETS) and it is located at the left side of the engine.

Here is my faulty Engine Temperature Sensor (ETS)

The faulty ETS with the new ETS package / cover. At this point, they have insallaed the new ETS and I got it for free as my bike is still under warranty.